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Finding the Fourth Proportional to 461,981.70, 692,972.55 and 378,000.90

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Solution

The fourth proportional to 461,981.70, 692,972.55 and 378,000.90 is: 567,001.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,981.70 : 692,972.55 = 378,000.90 : x
  2. Step 2: Convert to fraction form
    461,981.70/692,972.55 = 378,000.90/x
  3. Step 3: Cross multiply
    461,981.70x = 692,972.55 × 378,000.90
  4. Step 4: Simplify right side
    461,981.70x = 261,944,247,575.30
  5. Step 5: Solve for x
    x = 261,944,247,575.30/461,981.70
  6. Step 6: Final answer
    x = 567,001.35

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Half scale
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Double scale
Find fourth proportional to 461,982.70, 692,974.05 and 378,001.90
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.