Home / 1,272,078.14-1,755,488.31-728,211.74

Finding the Fourth Proportional to 1,272,078.14, 1,755,488.31 and 728,211.74

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Solution

The fourth proportional to 1,272,078.14, 1,755,488.31 and 728,211.74 is: 1,004,943.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,078.14 : 1,755,488.31 = 728,211.74 : x
  2. Step 2: Convert to fraction form
    1,272,078.14/1,755,488.31 = 728,211.74/x
  3. Step 3: Cross multiply
    1,272,078.14x = 1,755,488.31 × 728,211.74
  4. Step 4: Simplify right side
    1,272,078.14x = 1,278,367,196,774.76
  5. Step 5: Solve for x
    x = 1,278,367,196,774.76/1,272,078.14
  6. Step 6: Final answer
    x = 1,004,943.92

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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.