Home / 782,354.97-1,078,589.82-668,852.91

Finding the Fourth Proportional to 782,354.97, 1,078,589.82 and 668,852.91

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Solution

The fourth proportional to 782,354.97, 1,078,589.82 and 668,852.91 is: 922,110.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,354.97 : 1,078,589.82 = 668,852.91 : x
  2. Step 2: Convert to fraction form
    782,354.97/1,078,589.82 = 668,852.91/x
  3. Step 3: Cross multiply
    782,354.97x = 1,078,589.82 × 668,852.91
  4. Step 4: Simplify right side
    782,354.97x = 721,417,942,311.58
  5. Step 5: Solve for x
    x = 721,417,942,311.58/782,354.97
  6. Step 6: Final answer
    x = 922,110.77

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1.5x scale

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.