Home / 853,078.88-1,278,708.96-642,064.16

Finding the Fourth Proportional to 853,078.88, 1,278,708.96 and 642,064.16

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Solution

The fourth proportional to 853,078.88, 1,278,708.96 and 642,064.16 is: 962,411.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,078.88 : 1,278,708.96 = 642,064.16 : x
  2. Step 2: Convert to fraction form
    853,078.88/1,278,708.96 = 642,064.16/x
  3. Step 3: Cross multiply
    853,078.88x = 1,278,708.96 × 642,064.16
  4. Step 4: Simplify right side
    853,078.88x = 821,013,194,286.87
  5. Step 5: Solve for x
    x = 821,013,194,286.87/853,078.88
  6. Step 6: Final answer
    x = 962,411.82

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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.