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Finding the Fourth Proportional to 453,702.20, 680,553.30 and 318,399.80

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Solution

The fourth proportional to 453,702.20, 680,553.30 and 318,399.80 is: 477,599.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,702.20 : 680,553.30 = 318,399.80 : x
  2. Step 2: Convert to fraction form
    453,702.20/680,553.30 = 318,399.80/x
  3. Step 3: Cross multiply
    453,702.20x = 680,553.30 × 318,399.80
  4. Step 4: Simplify right side
    453,702.20x = 216,688,034,609.34
  5. Step 5: Solve for x
    x = 216,688,034,609.34/453,702.20
  6. Step 6: Final answer
    x = 477,599.70

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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.