Home / 681,108.12-1,020,087.42-657,488.52

Finding the Fourth Proportional to 681,108.12, 1,020,087.42 and 657,488.52

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Solution

The fourth proportional to 681,108.12, 1,020,087.42 and 657,488.52 is: 984,712.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,108.12 : 1,020,087.42 = 657,488.52 : x
  2. Step 2: Convert to fraction form
    681,108.12/1,020,087.42 = 657,488.52/x
  3. Step 3: Cross multiply
    681,108.12x = 1,020,087.42 × 657,488.52
  4. Step 4: Simplify right side
    681,108.12x = 670,695,768,046.42
  5. Step 5: Solve for x
    x = 670,695,768,046.42/681,108.12
  6. Step 6: Final answer
    x = 984,712.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.