Home / 1,280,326.52-1,765,351.86-872,669.72

Finding the Fourth Proportional to 1,280,326.52, 1,765,351.86 and 872,669.72

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Solution

The fourth proportional to 1,280,326.52, 1,765,351.86 and 872,669.72 is: 1,203,262.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,326.52 : 1,765,351.86 = 872,669.72 : x
  2. Step 2: Convert to fraction form
    1,280,326.52/1,765,351.86 = 872,669.72/x
  3. Step 3: Cross multiply
    1,280,326.52x = 1,765,351.86 × 872,669.72
  4. Step 4: Simplify right side
    1,280,326.52x = 1,540,569,113,367.68
  5. Step 5: Solve for x
    x = 1,540,569,113,367.68/1,280,326.52
  6. Step 6: Final answer
    x = 1,203,262.68

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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.