Home / 1,290,682.52-1,781,517.35-860,961.62

Finding the Fourth Proportional to 1,290,682.52, 1,781,517.35 and 860,961.62

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Solution

The fourth proportional to 1,290,682.52, 1,781,517.35 and 860,961.62 is: 1,188,377.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,682.52 : 1,781,517.35 = 860,961.62 : x
  2. Step 2: Convert to fraction form
    1,290,682.52/1,781,517.35 = 860,961.62/x
  3. Step 3: Cross multiply
    1,290,682.52x = 1,781,517.35 × 860,961.62
  4. Step 4: Simplify right side
    1,290,682.52x = 1,533,818,067,091.70
  5. Step 5: Solve for x
    x = 1,533,818,067,091.70/1,290,682.52
  6. Step 6: Final answer
    x = 1,188,377.50

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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.