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Finding the Fourth Proportional to 981,330.60, 1,471,995.90 and 910,471.80

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Solution

The fourth proportional to 981,330.60, 1,471,995.90 and 910,471.80 is: 1,365,707.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,330.60 : 1,471,995.90 = 910,471.80 : x
  2. Step 2: Convert to fraction form
    981,330.60/1,471,995.90 = 910,471.80/x
  3. Step 3: Cross multiply
    981,330.60x = 1,471,995.90 × 910,471.80
  4. Step 4: Simplify right side
    981,330.60x = 1,340,210,756,665.62
  5. Step 5: Solve for x
    x = 1,340,210,756,665.62/981,330.60
  6. Step 6: Final answer
    x = 1,365,707.70

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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.