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Finding the Fourth Proportional to 658,221.60, 987,040.80 and 303,344.40

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Solution

The fourth proportional to 658,221.60, 987,040.80 and 303,344.40 is: 454,882.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,221.60 : 987,040.80 = 303,344.40 : x
  2. Step 2: Convert to fraction form
    658,221.60/987,040.80 = 303,344.40/x
  3. Step 3: Cross multiply
    658,221.60x = 987,040.80 × 303,344.40
  4. Step 4: Simplify right side
    658,221.60x = 299,413,299,251.52
  5. Step 5: Solve for x
    x = 299,413,299,251.52/658,221.60
  6. Step 6: Final answer
    x = 454,882.21

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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.