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Finding the Fourth Proportional to 486,749.20, 730,123.80 and 433,872.40

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Solution

The fourth proportional to 486,749.20, 730,123.80 and 433,872.40 is: 650,808.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,749.20 : 730,123.80 = 433,872.40 : x
  2. Step 2: Convert to fraction form
    486,749.20/730,123.80 = 433,872.40/x
  3. Step 3: Cross multiply
    486,749.20x = 730,123.80 × 433,872.40
  4. Step 4: Simplify right side
    486,749.20x = 316,780,565,403.12
  5. Step 5: Solve for x
    x = 316,780,565,403.12/486,749.20
  6. Step 6: Final answer
    x = 650,808.60

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.