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Finding the Fourth Proportional to 658,136.40, 987,204.60 and 377,422.80

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Solution

The fourth proportional to 658,136.40, 987,204.60 and 377,422.80 is: 566,134.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,136.40 : 987,204.60 = 377,422.80 : x
  2. Step 2: Convert to fraction form
    658,136.40/987,204.60 = 377,422.80/x
  3. Step 3: Cross multiply
    658,136.40x = 987,204.60 × 377,422.80
  4. Step 4: Simplify right side
    658,136.40x = 372,593,524,304.88
  5. Step 5: Solve for x
    x = 372,593,524,304.88/658,136.40
  6. Step 6: Final answer
    x = 566,134.20

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1.5x scale

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.