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Finding the Fourth Proportional to 663,384.24, 915,494.76 and 376,952.86

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Solution

The fourth proportional to 663,384.24, 915,494.76 and 376,952.86 is: 520,208.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,384.24 : 915,494.76 = 376,952.86 : x
  2. Step 2: Convert to fraction form
    663,384.24/915,494.76 = 376,952.86/x
  3. Step 3: Cross multiply
    663,384.24x = 915,494.76 × 376,952.86
  4. Step 4: Simplify right side
    663,384.24x = 345,098,368,097.01
  5. Step 5: Solve for x
    x = 345,098,368,097.01/663,384.24
  6. Step 6: Final answer
    x = 520,208.87

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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.