Home / 1,187,455.60-1,781,399.40-388,514.80

Finding the Fourth Proportional to 1,187,455.60, 1,781,399.40 and 388,514.80

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Solution

The fourth proportional to 1,187,455.60, 1,781,399.40 and 388,514.80 is: 582,842.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,455.60 : 1,781,399.40 = 388,514.80 : x
  2. Step 2: Convert to fraction form
    1,187,455.60/1,781,399.40 = 388,514.80/x
  3. Step 3: Cross multiply
    1,187,455.60x = 1,781,399.40 × 388,514.80
  4. Step 4: Simplify right side
    1,187,455.60x = 692,100,031,611.12
  5. Step 5: Solve for x
    x = 692,100,031,611.12/1,187,455.60
  6. Step 6: Final answer
    x = 582,842.87

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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.