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Finding the Fourth Proportional to 711,711.68, 982,065.22 and 425,170.92

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Solution

The fourth proportional to 711,711.68, 982,065.22 and 425,170.92 is: 586,677.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,711.68 : 982,065.22 = 425,170.92 : x
  2. Step 2: Convert to fraction form
    711,711.68/982,065.22 = 425,170.92/x
  3. Step 3: Cross multiply
    711,711.68x = 982,065.22 × 425,170.92
  4. Step 4: Simplify right side
    711,711.68x = 417,545,573,087.40
  5. Step 5: Solve for x
    x = 417,545,573,087.40/711,711.68
  6. Step 6: Final answer
    x = 586,677.98

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1.5x scale

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.