Home / 791,500.80-1,187,366.40-258,892.80

Finding the Fourth Proportional to 791,500.80, 1,187,366.40 and 258,892.80

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Solution

The fourth proportional to 791,500.80, 1,187,366.40 and 258,892.80 is: 388,376.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,500.80 : 1,187,366.40 = 258,892.80 : x
  2. Step 2: Convert to fraction form
    791,500.80/1,187,366.40 = 258,892.80/x
  3. Step 3: Cross multiply
    791,500.80x = 1,187,366.40 × 258,892.80
  4. Step 4: Simplify right side
    791,500.80x = 307,400,611,921.92
  5. Step 5: Solve for x
    x = 307,400,611,921.92/791,500.80
  6. Step 6: Final answer
    x = 388,376.88

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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.