Home / 1,240,389.87-1,859,403.81-398,351.13

Finding the Fourth Proportional to 1,240,389.87, 1,859,403.81 and 398,351.13

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Solution

The fourth proportional to 1,240,389.87, 1,859,403.81 and 398,351.13 is: 597,147.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,389.87 : 1,859,403.81 = 398,351.13 : x
  2. Step 2: Convert to fraction form
    1,240,389.87/1,859,403.81 = 398,351.13/x
  3. Step 3: Cross multiply
    1,240,389.87x = 1,859,403.81 × 398,351.13
  4. Step 4: Simplify right side
    1,240,389.87x = 740,695,608,839.81
  5. Step 5: Solve for x
    x = 740,695,608,839.81/1,240,389.87
  6. Step 6: Final answer
    x = 597,147.42

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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.