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Finding the Fourth Proportional to 887,650.80, 1,331,260.20 and 256,498.80

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Solution

The fourth proportional to 887,650.80, 1,331,260.20 and 256,498.80 is: 384,685.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,650.80 : 1,331,260.20 = 256,498.80 : x
  2. Step 2: Convert to fraction form
    887,650.80/1,331,260.20 = 256,498.80/x
  3. Step 3: Cross multiply
    887,650.80x = 1,331,260.20 × 256,498.80
  4. Step 4: Simplify right side
    887,650.80x = 341,466,643,787.76
  5. Step 5: Solve for x
    x = 341,466,643,787.76/887,650.80
  6. Step 6: Final answer
    x = 384,685.78

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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.