Home / 1,240,419.87-1,859,448.62-398,381.13

Finding the Fourth Proportional to 1,240,419.87, 1,859,448.62 and 398,381.13

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Solution

The fourth proportional to 1,240,419.87, 1,859,448.62 and 398,381.13 is: 597,192.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,419.87 : 1,859,448.62 = 398,381.13 : x
  2. Step 2: Convert to fraction form
    1,240,419.87/1,859,448.62 = 398,381.13/x
  3. Step 3: Cross multiply
    1,240,419.87x = 1,859,448.62 × 398,381.13
  4. Step 4: Simplify right side
    1,240,419.87x = 740,769,231,123.39
  5. Step 5: Solve for x
    x = 740,769,231,123.39/1,240,419.87
  6. Step 6: Final answer
    x = 597,192.33

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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.