Home / 821,240.52-1,234,047.78-442,452.12

Finding the Fourth Proportional to 821,240.52, 1,234,047.78 and 442,452.12

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Solution

The fourth proportional to 821,240.52, 1,234,047.78 and 442,452.12 is: 664,856.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,240.52 : 1,234,047.78 = 442,452.12 : x
  2. Step 2: Convert to fraction form
    821,240.52/1,234,047.78 = 442,452.12/x
  3. Step 3: Cross multiply
    821,240.52x = 1,234,047.78 × 442,452.12
  4. Step 4: Simplify right side
    821,240.52x = 546,007,056,442.29
  5. Step 5: Solve for x
    x = 546,007,056,442.29/821,240.52
  6. Step 6: Final answer
    x = 664,856.45

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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.