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Finding the Fourth Proportional to 497,117.20, 745,675.80 and 455,126.80

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Solution

The fourth proportional to 497,117.20, 745,675.80 and 455,126.80 is: 682,690.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,117.20 : 745,675.80 = 455,126.80 : x
  2. Step 2: Convert to fraction form
    497,117.20/745,675.80 = 455,126.80/x
  3. Step 3: Cross multiply
    497,117.20x = 745,675.80 × 455,126.80
  4. Step 4: Simplify right side
    497,117.20x = 339,377,040,691.44
  5. Step 5: Solve for x
    x = 339,377,040,691.44/497,117.20
  6. Step 6: Final answer
    x = 682,690.20

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Similar ratio
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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.