Home / 389,869.06-584,824.47-123,649.78

Finding the Fourth Proportional to 389,869.06, 584,824.47 and 123,649.78

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Solution

The fourth proportional to 389,869.06, 584,824.47 and 123,649.78 is: 185,481.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,869.06 : 584,824.47 = 123,649.78 : x
  2. Step 2: Convert to fraction form
    389,869.06/584,824.47 = 123,649.78/x
  3. Step 3: Cross multiply
    389,869.06x = 584,824.47 × 123,649.78
  4. Step 4: Simplify right side
    389,869.06x = 72,313,417,054.12
  5. Step 5: Solve for x
    x = 72,313,417,054.12/389,869.06
  6. Step 6: Final answer
    x = 185,481.29

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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.