Home / 729,658,079.38-1,006,929,120.82-395,131,179.10

Finding the Fourth Proportional to 729,658,079.38, 1,006,929,120.82 and 395,131,179.10

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Solution

The fourth proportional to 729,658,079.38, 1,006,929,120.82 and 395,131,179.10 is: 545,281,553.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,658,079.38 : 1,006,929,120.82 = 395,131,179.10 : x
  2. Step 2: Convert to fraction form
    729,658,079.38/1,006,929,120.82 = 395,131,179.10/x
  3. Step 3: Cross multiply
    729,658,079.38x = 1,006,929,120.82 × 395,131,179.10
  4. Step 4: Simplify right side
    729,658,079.38x = 397,869,090,779,732,992
  5. Step 5: Solve for x
    x = 397,869,090,779,732,992/729,658,079.38
  6. Step 6: Final answer
    x = 545,281,553.13

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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.