Home / 828,122.20-1,242,356.10-267,213.40

Finding the Fourth Proportional to 828,122.20, 1,242,356.10 and 267,213.40

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Solution

The fourth proportional to 828,122.20, 1,242,356.10 and 267,213.40 is: 400,875.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,122.20 : 1,242,356.10 = 267,213.40 : x
  2. Step 2: Convert to fraction form
    828,122.20/1,242,356.10 = 267,213.40/x
  3. Step 3: Cross multiply
    828,122.20x = 1,242,356.10 × 267,213.40
  4. Step 4: Simplify right side
    828,122.20x = 331,974,197,491.74
  5. Step 5: Solve for x
    x = 331,974,197,491.74/828,122.20
  6. Step 6: Final answer
    x = 400,875.86

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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.