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Finding the Fourth Proportional to 981,092.70, 1,471,687.65 and 508,700.70

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Solution

The fourth proportional to 981,092.70, 1,471,687.65 and 508,700.70 is: 763,076.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,092.70 : 1,471,687.65 = 508,700.70 : x
  2. Step 2: Convert to fraction form
    981,092.70/1,471,687.65 = 508,700.70/x
  3. Step 3: Cross multiply
    981,092.70x = 1,471,687.65 × 508,700.70
  4. Step 4: Simplify right side
    981,092.70x = 748,648,537,736.36
  5. Step 5: Solve for x
    x = 748,648,537,736.36/981,092.70
  6. Step 6: Final answer
    x = 763,076.25

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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.