Home / 726,798,221.79-1,002,976,443.86-396,773,360.79

Finding the Fourth Proportional to 726,798,221.79, 1,002,976,443.86 and 396,773,360.79

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Solution

The fourth proportional to 726,798,221.79, 1,002,976,443.86 and 396,773,360.79 is: 547,544,452.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,798,221.79 : 1,002,976,443.86 = 396,773,360.79 : x
  2. Step 2: Convert to fraction form
    726,798,221.79/1,002,976,443.86 = 396,773,360.79/x
  3. Step 3: Cross multiply
    726,798,221.79x = 1,002,976,443.86 × 396,773,360.79
  4. Step 4: Simplify right side
    726,798,221.79x = 397,954,334,423,534,976
  5. Step 5: Solve for x
    x = 397,954,334,423,534,976/726,798,221.79
  6. Step 6: Final answer
    x = 547,544,452.49

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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.