Home / 828,111.40-1,242,167.10-267,145.90

Finding the Fourth Proportional to 828,111.40, 1,242,167.10 and 267,145.90

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Solution

The fourth proportional to 828,111.40, 1,242,167.10 and 267,145.90 is: 400,718.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,111.40 : 1,242,167.10 = 267,145.90 : x
  2. Step 2: Convert to fraction form
    828,111.40/1,242,167.10 = 267,145.90/x
  3. Step 3: Cross multiply
    828,111.40x = 1,242,167.10 × 267,145.90
  4. Step 4: Simplify right side
    828,111.40x = 331,839,847,879.89
  5. Step 5: Solve for x
    x = 331,839,847,879.89/828,111.40
  6. Step 6: Final answer
    x = 400,718.85

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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.