Home / 1,280,070,143.94-1,766,487,394.17-723,143,070.66

Finding the Fourth Proportional to 1,280,070,143.94, 1,766,487,394.17 and 723,143,070.66

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Solution

The fourth proportional to 1,280,070,143.94, 1,766,487,394.17 and 723,143,070.66 is: 997,932,124.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,070,143.94 : 1,766,487,394.17 = 723,143,070.66 : x
  2. Step 2: Convert to fraction form
    1,280,070,143.94/1,766,487,394.17 = 723,143,070.66/x
  3. Step 3: Cross multiply
    1,280,070,143.94x = 1,766,487,394.17 × 723,143,070.66
  4. Step 4: Simplify right side
    1,280,070,143.94x = 1,277,423,118,502,275,584
  5. Step 5: Solve for x
    x = 1,277,423,118,502,275,584/1,280,070,143.94
  6. Step 6: Final answer
    x = 997,932,124.70

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Half scale
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Double scale
Find fourth proportional to 1,280,070,144.94, 1,766,487,395.55 and 723,143,071.66
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.