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Finding the Fourth Proportional to 447,071.20, 670,606.80 and 398,082.40

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Solution

The fourth proportional to 447,071.20, 670,606.80 and 398,082.40 is: 597,123.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,071.20 : 670,606.80 = 398,082.40 : x
  2. Step 2: Convert to fraction form
    447,071.20/670,606.80 = 398,082.40/x
  3. Step 3: Cross multiply
    447,071.20x = 670,606.80 × 398,082.40
  4. Step 4: Simplify right side
    447,071.20x = 266,956,764,400.32
  5. Step 5: Solve for x
    x = 266,956,764,400.32/447,071.20
  6. Step 6: Final answer
    x = 597,123.60

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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.