Home / 1,280,070,142.44-1,766,487,392.10-723,143,069.16

Finding the Fourth Proportional to 1,280,070,142.44, 1,766,487,392.10 and 723,143,069.16

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Solution

The fourth proportional to 1,280,070,142.44, 1,766,487,392.10 and 723,143,069.16 is: 997,932,122.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,070,142.44 : 1,766,487,392.10 = 723,143,069.16 : x
  2. Step 2: Convert to fraction form
    1,280,070,142.44/1,766,487,392.10 = 723,143,069.16/x
  3. Step 3: Cross multiply
    1,280,070,142.44x = 1,766,487,392.10 × 723,143,069.16
  4. Step 4: Simplify right side
    1,280,070,142.44x = 1,277,423,114,355,638,272
  5. Step 5: Solve for x
    x = 1,277,423,114,355,638,272/1,280,070,142.44
  6. Step 6: Final answer
    x = 997,932,122.63

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Half scale
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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.