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Finding the Fourth Proportional to 791,825.80, 1,187,727.90 and 259,364.20

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Solution

The fourth proportional to 791,825.80, 1,187,727.90 and 259,364.20 is: 389,042.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,825.80 : 1,187,727.90 = 259,364.20 : x
  2. Step 2: Convert to fraction form
    791,825.80/1,187,727.90 = 259,364.20/x
  3. Step 3: Cross multiply
    791,825.80x = 1,187,727.90 × 259,364.20
  4. Step 4: Simplify right side
    791,825.80x = 308,054,096,601.18
  5. Step 5: Solve for x
    x = 308,054,096,601.18/791,825.80
  6. Step 6: Final answer
    x = 389,042.76

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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.