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Finding the Fourth Proportional to 663,248.40, 915,977.57 and 457,052.91

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Solution

The fourth proportional to 663,248.40, 915,977.57 and 457,052.91 is: 631,211.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,248.40 : 915,977.57 = 457,052.91 : x
  2. Step 2: Convert to fraction form
    663,248.40/915,977.57 = 457,052.91/x
  3. Step 3: Cross multiply
    663,248.40x = 915,977.57 × 457,052.91
  4. Step 4: Simplify right side
    663,248.40x = 418,650,211,577.96
  5. Step 5: Solve for x
    x = 418,650,211,577.96/663,248.40
  6. Step 6: Final answer
    x = 631,211.79

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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.