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Finding the Fourth Proportional to 658,082.20, 987,123.30 and 583,286.80

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Solution

The fourth proportional to 658,082.20, 987,123.30 and 583,286.80 is: 874,930.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,082.20 : 987,123.30 = 583,286.80 : x
  2. Step 2: Convert to fraction form
    658,082.20/987,123.30 = 583,286.80/x
  3. Step 3: Cross multiply
    658,082.20x = 987,123.30 × 583,286.80
  4. Step 4: Simplify right side
    658,082.20x = 575,775,990,862.44
  5. Step 5: Solve for x
    x = 575,775,990,862.44/658,082.20
  6. Step 6: Final answer
    x = 874,930.20

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Double scale
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Similar ratio
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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.