Home / 1,290,884.40-1,781,395.14-717,912.27

Finding the Fourth Proportional to 1,290,884.40, 1,781,395.14 and 717,912.27

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Solution

The fourth proportional to 1,290,884.40, 1,781,395.14 and 717,912.27 is: 990,704.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,884.40 : 1,781,395.14 = 717,912.27 : x
  2. Step 2: Convert to fraction form
    1,290,884.40/1,781,395.14 = 717,912.27/x
  3. Step 3: Cross multiply
    1,290,884.40x = 1,781,395.14 × 717,912.27
  4. Step 4: Simplify right side
    1,290,884.40x = 1,278,885,428,724.37
  5. Step 5: Solve for x
    x = 1,278,885,428,724.37/1,290,884.40
  6. Step 6: Final answer
    x = 990,704.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.