Home / 1,389,724.40-2,081,087.40-913,833.20

Finding the Fourth Proportional to 1,389,724.40, 2,081,087.40 and 913,833.20

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Solution

The fourth proportional to 1,389,724.40, 2,081,087.40 and 913,833.20 is: 1,368,448.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,724.40 : 2,081,087.40 = 913,833.20 : x
  2. Step 2: Convert to fraction form
    1,389,724.40/2,081,087.40 = 913,833.20/x
  3. Step 3: Cross multiply
    1,389,724.40x = 2,081,087.40 × 913,833.20
  4. Step 4: Simplify right side
    1,389,724.40x = 1,901,766,758,221.68
  5. Step 5: Solve for x
    x = 1,901,766,758,221.68/1,389,724.40
  6. Step 6: Final answer
    x = 1,368,448.85

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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.