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Finding the Fourth Proportional to 658,205.40, 987,308.10 and 377,491.80

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Solution

The fourth proportional to 658,205.40, 987,308.10 and 377,491.80 is: 566,237.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,205.40 : 987,308.10 = 377,491.80 : x
  2. Step 2: Convert to fraction form
    658,205.40/987,308.10 = 377,491.80/x
  3. Step 3: Cross multiply
    658,205.40x = 987,308.10 × 377,491.80
  4. Step 4: Simplify right side
    658,205.40x = 372,700,711,823.58
  5. Step 5: Solve for x
    x = 372,700,711,823.58/658,205.40
  6. Step 6: Final answer
    x = 566,237.70

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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.