Home / 691,132.70-1,036,699.05-292,223.90

Finding the Fourth Proportional to 691,132.70, 1,036,699.05 and 292,223.90

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Solution

The fourth proportional to 691,132.70, 1,036,699.05 and 292,223.90 is: 438,335.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,132.70 : 1,036,699.05 = 292,223.90 : x
  2. Step 2: Convert to fraction form
    691,132.70/1,036,699.05 = 292,223.90/x
  3. Step 3: Cross multiply
    691,132.70x = 1,036,699.05 × 292,223.90
  4. Step 4: Simplify right side
    691,132.70x = 302,948,239,517.30
  5. Step 5: Solve for x
    x = 302,948,239,517.30/691,132.70
  6. Step 6: Final answer
    x = 438,335.85

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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.