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Finding the Fourth Proportional to 711,674.88, 981,950.76 and 425,139

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Solution

The fourth proportional to 711,674.88, 981,950.76 and 425,139 is: 586,595.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,674.88 : 981,950.76 = 425,139 : x
  2. Step 2: Convert to fraction form
    711,674.88/981,950.76 = 425,139/x
  3. Step 3: Cross multiply
    711,674.88x = 981,950.76 × 425,139
  4. Step 4: Simplify right side
    711,674.88x = 417,465,564,155.64
  5. Step 5: Solve for x
    x = 417,465,564,155.64/711,674.88
  6. Step 6: Final answer
    x = 586,595.90

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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.