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Finding the Fourth Proportional to 453,755.70, 680,633.55 and 424,231.20

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Solution

The fourth proportional to 453,755.70, 680,633.55 and 424,231.20 is: 636,346.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,755.70 : 680,633.55 = 424,231.20 : x
  2. Step 2: Convert to fraction form
    453,755.70/680,633.55 = 424,231.20/x
  3. Step 3: Cross multiply
    453,755.70x = 680,633.55 × 424,231.20
  4. Step 4: Simplify right side
    453,755.70x = 288,745,987,676.76
  5. Step 5: Solve for x
    x = 288,745,987,676.76/453,755.70
  6. Step 6: Final answer
    x = 636,346.80

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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.