Home / 1,280,070,140.94-1,766,487,390.03-723,143,067.66

Finding the Fourth Proportional to 1,280,070,140.94, 1,766,487,390.03 and 723,143,067.66

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Solution

The fourth proportional to 1,280,070,140.94, 1,766,487,390.03 and 723,143,067.66 is: 997,932,120.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,070,140.94 : 1,766,487,390.03 = 723,143,067.66 : x
  2. Step 2: Convert to fraction form
    1,280,070,140.94/1,766,487,390.03 = 723,143,067.66/x
  3. Step 3: Cross multiply
    1,280,070,140.94x = 1,766,487,390.03 × 723,143,067.66
  4. Step 4: Simplify right side
    1,280,070,140.94x = 1,277,423,110,209,000,960
  5. Step 5: Solve for x
    x = 1,277,423,110,209,000,960/1,280,070,140.94
  6. Step 6: Final answer
    x = 997,932,120.56

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Double scale
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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.