Home / 729,759,291.57-1,007,067,503.34-395,231,830.92

Finding the Fourth Proportional to 729,759,291.57, 1,007,067,503.34 and 395,231,830.92

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Solution

The fourth proportional to 729,759,291.57, 1,007,067,503.34 and 395,231,830.92 is: 545,419,753.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,759,291.57 : 1,007,067,503.34 = 395,231,830.92 : x
  2. Step 2: Convert to fraction form
    729,759,291.57/1,007,067,503.34 = 395,231,830.92/x
  3. Step 3: Cross multiply
    729,759,291.57x = 1,007,067,503.34 × 395,231,830.92
  4. Step 4: Simplify right side
    729,759,291.57x = 398,025,133,205,101,440
  5. Step 5: Solve for x
    x = 398,025,133,205,101,440/729,759,291.57
  6. Step 6: Final answer
    x = 545,419,753.89

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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.