Home / 861,635.40-1,288,853.12-605,450.02

Finding the Fourth Proportional to 861,635.40, 1,288,853.12 and 605,450.02

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Solution

The fourth proportional to 861,635.40, 1,288,853.12 and 605,450.02 is: 905,645.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,635.40 : 1,288,853.12 = 605,450.02 : x
  2. Step 2: Convert to fraction form
    861,635.40/1,288,853.12 = 605,450.02/x
  3. Step 3: Cross multiply
    861,635.40x = 1,288,853.12 × 605,450.02
  4. Step 4: Simplify right side
    861,635.40x = 780,336,137,809.55
  5. Step 5: Solve for x
    x = 780,336,137,809.55/861,635.40
  6. Step 6: Final answer
    x = 905,645.41

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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.