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Finding the Fourth Proportional to 980,908.20, 1,471,410.90 and 508,516.20

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Solution

The fourth proportional to 980,908.20, 1,471,410.90 and 508,516.20 is: 762,799.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,908.20 : 1,471,410.90 = 508,516.20 : x
  2. Step 2: Convert to fraction form
    980,908.20/1,471,410.90 = 508,516.20/x
  3. Step 3: Cross multiply
    980,908.20x = 1,471,410.90 × 508,516.20
  4. Step 4: Simplify right side
    980,908.20x = 748,236,279,506.58
  5. Step 5: Solve for x
    x = 748,236,279,506.58/980,908.20
  6. Step 6: Final answer
    x = 762,799.49

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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.