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Finding the Fourth Proportional to 709,892.92, 979,644.81 and 387,602.02

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Solution

The fourth proportional to 709,892.92, 979,644.81 and 387,602.02 is: 534,886.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,892.92 : 979,644.81 = 387,602.02 : x
  2. Step 2: Convert to fraction form
    709,892.92/979,644.81 = 387,602.02/x
  3. Step 3: Cross multiply
    709,892.92x = 979,644.81 × 387,602.02
  4. Step 4: Simplify right side
    709,892.92x = 379,712,307,238.52
  5. Step 5: Solve for x
    x = 379,712,307,238.52/709,892.92
  6. Step 6: Final answer
    x = 534,886.74

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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.