Home / 831,520.30-1,248,009.45-494,139.10

Finding the Fourth Proportional to 831,520.30, 1,248,009.45 and 494,139.10

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Solution

The fourth proportional to 831,520.30, 1,248,009.45 and 494,139.10 is: 741,641.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,520.30 : 1,248,009.45 = 494,139.10 : x
  2. Step 2: Convert to fraction form
    831,520.30/1,248,009.45 = 494,139.10/x
  3. Step 3: Cross multiply
    831,520.30x = 1,248,009.45 × 494,139.10
  4. Step 4: Simplify right side
    831,520.30x = 616,690,266,414.50
  5. Step 5: Solve for x
    x = 616,690,266,414.50/831,520.30
  6. Step 6: Final answer
    x = 741,641.87

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Double scale
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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.