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Finding the Fourth Proportional to 563,278.20, 844,640.82 and 278,639.88

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Solution

The fourth proportional to 563,278.20, 844,640.82 and 278,639.88 is: 417,823.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,278.20 : 844,640.82 = 278,639.88 : x
  2. Step 2: Convert to fraction form
    563,278.20/844,640.82 = 278,639.88/x
  3. Step 3: Cross multiply
    563,278.20x = 844,640.82 × 278,639.88
  4. Step 4: Simplify right side
    563,278.20x = 235,350,616,727.90
  5. Step 5: Solve for x
    x = 235,350,616,727.90/563,278.20
  6. Step 6: Final answer
    x = 417,823.05

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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.