Home / 520,787.38-781,181.07-494,193.46

Finding the Fourth Proportional to 520,787.38, 781,181.07 and 494,193.46

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Solution

The fourth proportional to 520,787.38, 781,181.07 and 494,193.46 is: 741,290.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,787.38 : 781,181.07 = 494,193.46 : x
  2. Step 2: Convert to fraction form
    520,787.38/781,181.07 = 494,193.46/x
  3. Step 3: Cross multiply
    520,787.38x = 781,181.07 × 494,193.46
  4. Step 4: Simplify right side
    520,787.38x = 386,054,575,869.80
  5. Step 5: Solve for x
    x = 386,054,575,869.80/520,787.38
  6. Step 6: Final answer
    x = 741,290.19

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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.