Home / 831,446.70-1,247,170.05-432,865.95

Finding the Fourth Proportional to 831,446.70, 1,247,170.05 and 432,865.95

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Solution

The fourth proportional to 831,446.70, 1,247,170.05 and 432,865.95 is: 649,298.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,446.70 : 1,247,170.05 = 432,865.95 : x
  2. Step 2: Convert to fraction form
    831,446.70/1,247,170.05 = 432,865.95/x
  3. Step 3: Cross multiply
    831,446.70x = 1,247,170.05 × 432,865.95
  4. Step 4: Simplify right side
    831,446.70x = 539,857,448,504.80
  5. Step 5: Solve for x
    x = 539,857,448,504.80/831,446.70
  6. Step 6: Final answer
    x = 649,298.93

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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.