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Finding the Fourth Proportional to 658,672.84, 989,331.90 and 392,952.52

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Solution

The fourth proportional to 658,672.84, 989,331.90 and 392,952.52 is: 590,217.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,672.84 : 989,331.90 = 392,952.52 : x
  2. Step 2: Convert to fraction form
    658,672.84/989,331.90 = 392,952.52/x
  3. Step 3: Cross multiply
    658,672.84x = 989,331.90 × 392,952.52
  4. Step 4: Simplify right side
    658,672.84x = 388,760,463,221.39
  5. Step 5: Solve for x
    x = 388,760,463,221.39/658,672.84
  6. Step 6: Final answer
    x = 590,217.84

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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.