Home / 791,220.82-1,187,017.92-258,739.78

Finding the Fourth Proportional to 791,220.82, 1,187,017.92 and 258,739.78

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Solution

The fourth proportional to 791,220.82, 1,187,017.92 and 258,739.78 is: 388,170.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,220.82 : 1,187,017.92 = 258,739.78 : x
  2. Step 2: Convert to fraction form
    791,220.82/1,187,017.92 = 258,739.78/x
  3. Step 3: Cross multiply
    791,220.82x = 1,187,017.92 × 258,739.78
  4. Step 4: Simplify right side
    791,220.82x = 307,128,755,476.86
  5. Step 5: Solve for x
    x = 307,128,755,476.86/791,220.82
  6. Step 6: Final answer
    x = 388,170.72

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1.5x scale

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.