Home / 643,972,760.32-966,439,928.50-478,358,694.32

Finding the Fourth Proportional to 643,972,760.32, 966,439,928.50 and 478,358,694.32

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Solution

The fourth proportional to 643,972,760.32, 966,439,928.50 and 478,358,694.32 is: 717,895,182.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,972,760.32 : 966,439,928.50 = 478,358,694.32 : x
  2. Step 2: Convert to fraction form
    643,972,760.32/966,439,928.50 = 478,358,694.32/x
  3. Step 3: Cross multiply
    643,972,760.32x = 966,439,928.50 × 478,358,694.32
  4. Step 4: Simplify right side
    643,972,760.32x = 462,304,942,335,974,144
  5. Step 5: Solve for x
    x = 462,304,942,335,974,144/643,972,760.32
  6. Step 6: Final answer
    x = 717,895,182.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.