Home / 1,187,481.60-1,781,438.40-388,540.80

Finding the Fourth Proportional to 1,187,481.60, 1,781,438.40 and 388,540.80

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Solution

The fourth proportional to 1,187,481.60, 1,781,438.40 and 388,540.80 is: 582,881.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,481.60 : 1,781,438.40 = 388,540.80 : x
  2. Step 2: Convert to fraction form
    1,187,481.60/1,781,438.40 = 388,540.80/x
  3. Step 3: Cross multiply
    1,187,481.60x = 1,781,438.40 × 388,540.80
  4. Step 4: Simplify right side
    1,187,481.60x = 692,161,501,086.72
  5. Step 5: Solve for x
    x = 692,161,501,086.72/1,187,481.60
  6. Step 6: Final answer
    x = 582,881.87

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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.