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Finding the Fourth Proportional to 637,685.45, 956,526.80 and 437,398.77

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Solution

The fourth proportional to 637,685.45, 956,526.80 and 437,398.77 is: 656,097.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,685.45 : 956,526.80 = 437,398.77 : x
  2. Step 2: Convert to fraction form
    637,685.45/956,526.80 = 437,398.77/x
  3. Step 3: Cross multiply
    637,685.45x = 956,526.80 × 437,398.77
  4. Step 4: Simplify right side
    637,685.45x = 418,383,643,605.04
  5. Step 5: Solve for x
    x = 418,383,643,605.04/637,685.45
  6. Step 6: Final answer
    x = 656,097.21

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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.