Home / 721,887,867.52-996,206,520.96-391,863,230.08

Finding the Fourth Proportional to 721,887,867.52, 996,206,520.96 and 391,863,230.08

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Solution

The fourth proportional to 721,887,867.52, 996,206,520.96 and 391,863,230.08 is: 540,771,943.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,887,867.52 : 996,206,520.96 = 391,863,230.08 : x
  2. Step 2: Convert to fraction form
    721,887,867.52/996,206,520.96 = 391,863,230.08/x
  3. Step 3: Cross multiply
    721,887,867.52x = 996,206,520.96 × 391,863,230.08
  4. Step 4: Simplify right side
    721,887,867.52x = 390,376,705,130,144,832
  5. Step 5: Solve for x
    x = 390,376,705,130,144,832/721,887,867.52
  6. Step 6: Final answer
    x = 540,771,943.53

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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.