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Finding the Fourth Proportional to 515,537.40, 773,306.10 and 480,545.40

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Solution

The fourth proportional to 515,537.40, 773,306.10 and 480,545.40 is: 720,818.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,537.40 : 773,306.10 = 480,545.40 : x
  2. Step 2: Convert to fraction form
    515,537.40/773,306.10 = 480,545.40/x
  3. Step 3: Cross multiply
    515,537.40x = 773,306.10 × 480,545.40
  4. Step 4: Simplify right side
    515,537.40x = 371,608,689,146.94
  5. Step 5: Solve for x
    x = 371,608,689,146.94/515,537.40
  6. Step 6: Final answer
    x = 720,818.10

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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.