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Finding the Fourth Proportional to 817,589.80, 1,145,806.70 and 817,589.80

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Solution

The fourth proportional to 817,589.80, 1,145,806.70 and 817,589.80 is: 1,145,806.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,589.80 : 1,145,806.70 = 817,589.80 : x
  2. Step 2: Convert to fraction form
    817,589.80/1,145,806.70 = 817,589.80/x
  3. Step 3: Cross multiply
    817,589.80x = 1,145,806.70 × 817,589.80
  4. Step 4: Simplify right side
    817,589.80x = 936,799,870,691.66
  5. Step 5: Solve for x
    x = 936,799,870,691.66/817,589.80
  6. Step 6: Final answer
    x = 1,145,806.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.