Home / 729,658,078.38-1,006,929,119.44-395,131,178.10

Finding the Fourth Proportional to 729,658,078.38, 1,006,929,119.44 and 395,131,178.10

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Solution

The fourth proportional to 729,658,078.38, 1,006,929,119.44 and 395,131,178.10 is: 545,281,551.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,658,078.38 : 1,006,929,119.44 = 395,131,178.10 : x
  2. Step 2: Convert to fraction form
    729,658,078.38/1,006,929,119.44 = 395,131,178.10/x
  3. Step 3: Cross multiply
    729,658,078.38x = 1,006,929,119.44 × 395,131,178.10
  4. Step 4: Simplify right side
    729,658,078.38x = 397,869,089,227,522,880
  5. Step 5: Solve for x
    x = 397,869,089,227,522,880/729,658,078.38
  6. Step 6: Final answer
    x = 545,281,551.75

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Double scale
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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.