Home / 891,938.88-1,338,112.56-386,584.80

Finding the Fourth Proportional to 891,938.88, 1,338,112.56 and 386,584.80

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Solution

The fourth proportional to 891,938.88, 1,338,112.56 and 386,584.80 is: 579,965.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,938.88 : 1,338,112.56 = 386,584.80 : x
  2. Step 2: Convert to fraction form
    891,938.88/1,338,112.56 = 386,584.80/x
  3. Step 3: Cross multiply
    891,938.88x = 1,338,112.56 × 386,584.80
  4. Step 4: Simplify right side
    891,938.88x = 517,293,976,385.09
  5. Step 5: Solve for x
    x = 517,293,976,385.09/891,938.88
  6. Step 6: Final answer
    x = 579,965.72

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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.