Home / 831,781.70-1,247,672.55-270,872.90

Finding the Fourth Proportional to 831,781.70, 1,247,672.55 and 270,872.90

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Solution

The fourth proportional to 831,781.70, 1,247,672.55 and 270,872.90 is: 406,309.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,781.70 : 1,247,672.55 = 270,872.90 : x
  2. Step 2: Convert to fraction form
    831,781.70/1,247,672.55 = 270,872.90/x
  3. Step 3: Cross multiply
    831,781.70x = 1,247,672.55 × 270,872.90
  4. Step 4: Simplify right side
    831,781.70x = 337,960,681,868.90
  5. Step 5: Solve for x
    x = 337,960,681,868.90/831,781.70
  6. Step 6: Final answer
    x = 406,309.35

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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.