Home / 1,538,751.25-2,123,419.21-885,478.15

Finding the Fourth Proportional to 1,538,751.25, 2,123,419.21 and 885,478.15

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Solution

The fourth proportional to 1,538,751.25, 2,123,419.21 and 885,478.15 is: 1,221,926.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538,751.25 : 2,123,419.21 = 885,478.15 : x
  2. Step 2: Convert to fraction form
    1,538,751.25/2,123,419.21 = 885,478.15/x
  3. Step 3: Cross multiply
    1,538,751.25x = 2,123,419.21 × 885,478.15
  4. Step 4: Simplify right side
    1,538,751.25x = 1,880,241,313,745.26
  5. Step 5: Solve for x
    x = 1,880,241,313,745.26/1,538,751.25
  6. Step 6: Final answer
    x = 1,221,926.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.