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Finding the Fourth Proportional to 711,371.34, 981,691.38 and 425,059.02

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Solution

The fourth proportional to 711,371.34, 981,691.38 and 425,059.02 is: 586,580.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,371.34 : 981,691.38 = 425,059.02 : x
  2. Step 2: Convert to fraction form
    711,371.34/981,691.38 = 425,059.02/x
  3. Step 3: Cross multiply
    711,371.34x = 981,691.38 × 425,059.02
  4. Step 4: Simplify right side
    711,371.34x = 417,276,775,925.25
  5. Step 5: Solve for x
    x = 417,276,775,925.25/711,371.34
  6. Step 6: Final answer
    x = 586,580.81

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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.