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Finding the Fourth Proportional to 658,920.80, 987,725.10 and 303,314.60

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Solution

The fourth proportional to 658,920.80, 987,725.10 and 303,314.60 is: 454,669.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,920.80 : 987,725.10 = 303,314.60 : x
  2. Step 2: Convert to fraction form
    658,920.80/987,725.10 = 303,314.60/x
  3. Step 3: Cross multiply
    658,920.80x = 987,725.10 × 303,314.60
  4. Step 4: Simplify right side
    658,920.80x = 299,591,443,616.46
  5. Step 5: Solve for x
    x = 299,591,443,616.46/658,920.80
  6. Step 6: Final answer
    x = 454,669.88

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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.