Home / 1,187,281.20-1,781,094.60-388,369.20

Finding the Fourth Proportional to 1,187,281.20, 1,781,094.60 and 388,369.20

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Solution

The fourth proportional to 1,187,281.20, 1,781,094.60 and 388,369.20 is: 582,610.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,281.20 : 1,781,094.60 = 388,369.20 : x
  2. Step 2: Convert to fraction form
    1,187,281.20/1,781,094.60 = 388,369.20/x
  3. Step 3: Cross multiply
    1,187,281.20x = 1,781,094.60 × 388,369.20
  4. Step 4: Simplify right side
    1,187,281.20x = 691,722,284,926.32
  5. Step 5: Solve for x
    x = 691,722,284,926.32/1,187,281.20
  6. Step 6: Final answer
    x = 582,610.32

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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.