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Finding the Fourth Proportional to 711,572.88, 981,810 and 425,037

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Solution

The fourth proportional to 711,572.88, 981,810 and 425,037 is: 586,455.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,572.88 : 981,810 = 425,037 : x
  2. Step 2: Convert to fraction form
    711,572.88/981,810 = 425,037/x
  3. Step 3: Cross multiply
    711,572.88x = 981,810 × 425,037
  4. Step 4: Simplify right side
    711,572.88x = 417,305,576,970
  5. Step 5: Solve for x
    x = 417,305,576,970/711,572.88
  6. Step 6: Final answer
    x = 586,455.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.