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Finding the Fourth Proportional to 807,586.40, 1,210,067.40 and 694,737.20

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Solution

The fourth proportional to 807,586.40, 1,210,067.40 and 694,737.20 is: 1,040,976.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,586.40 : 1,210,067.40 = 694,737.20 : x
  2. Step 2: Convert to fraction form
    807,586.40/1,210,067.40 = 694,737.20/x
  3. Step 3: Cross multiply
    807,586.40x = 1,210,067.40 × 694,737.20
  4. Step 4: Simplify right side
    807,586.40x = 840,678,837,287.28
  5. Step 5: Solve for x
    x = 840,678,837,287.28/807,586.40
  6. Step 6: Final answer
    x = 1,040,976.96

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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.