Home / 1,432,169.82-1,976,445.09-787,639.86

Finding the Fourth Proportional to 1,432,169.82, 1,976,445.09 and 787,639.86

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Solution

The fourth proportional to 1,432,169.82, 1,976,445.09 and 787,639.86 is: 1,086,970.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432,169.82 : 1,976,445.09 = 787,639.86 : x
  2. Step 2: Convert to fraction form
    1,432,169.82/1,976,445.09 = 787,639.86/x
  3. Step 3: Cross multiply
    1,432,169.82x = 1,976,445.09 × 787,639.86
  4. Step 4: Simplify right side
    1,432,169.82x = 1,556,726,933,985.29
  5. Step 5: Solve for x
    x = 1,556,726,933,985.29/1,432,169.82
  6. Step 6: Final answer
    x = 1,086,970.91

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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.