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Finding the Fourth Proportional to 517,808.70, 775,717.97 and 317,545.11

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Solution

The fourth proportional to 517,808.70, 775,717.97 and 317,545.11 is: 475,707.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,808.70 : 775,717.97 = 317,545.11 : x
  2. Step 2: Convert to fraction form
    517,808.70/775,717.97 = 317,545.11/x
  3. Step 3: Cross multiply
    517,808.70x = 775,717.97 × 317,545.11
  4. Step 4: Simplify right side
    517,808.70x = 246,325,446,524.90
  5. Step 5: Solve for x
    x = 246,325,446,524.90/517,808.70
  6. Step 6: Final answer
    x = 475,707.43

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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.