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Finding the Fourth Proportional to 447,071.70, 670,607.55 and 398,082.90

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Solution

The fourth proportional to 447,071.70, 670,607.55 and 398,082.90 is: 597,124.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,071.70 : 670,607.55 = 398,082.90 : x
  2. Step 2: Convert to fraction form
    447,071.70/670,607.55 = 398,082.90/x
  3. Step 3: Cross multiply
    447,071.70x = 670,607.55 × 398,082.90
  4. Step 4: Simplify right side
    447,071.70x = 266,957,398,265.90
  5. Step 5: Solve for x
    x = 266,957,398,265.90/447,071.70
  6. Step 6: Final answer
    x = 597,124.35

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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.