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Finding the Fourth Proportional to 639,253.65, 882,501.69 and 466,978.17

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Solution

The fourth proportional to 639,253.65, 882,501.69 and 466,978.17 is: 644,672.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,253.65 : 882,501.69 = 466,978.17 : x
  2. Step 2: Convert to fraction form
    639,253.65/882,501.69 = 466,978.17/x
  3. Step 3: Cross multiply
    639,253.65x = 882,501.69 × 466,978.17
  4. Step 4: Simplify right side
    639,253.65x = 412,109,024,218.11
  5. Step 5: Solve for x
    x = 412,109,024,218.11/639,253.65
  6. Step 6: Final answer
    x = 644,672.15

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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.