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Finding the Fourth Proportional to 497,117.70, 745,676.55 and 455,127.30

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Solution

The fourth proportional to 497,117.70, 745,676.55 and 455,127.30 is: 682,690.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,117.70 : 745,676.55 = 455,127.30 : x
  2. Step 2: Convert to fraction form
    497,117.70/745,676.55 = 455,127.30/x
  3. Step 3: Cross multiply
    497,117.70x = 745,676.55 × 455,127.30
  4. Step 4: Simplify right side
    497,117.70x = 339,377,754,874.82
  5. Step 5: Solve for x
    x = 339,377,754,874.82/497,117.70
  6. Step 6: Final answer
    x = 682,690.95

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Double scale
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Similar ratio
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1.5x scale

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.