Home / 1,538,440.80-2,123,017.20-935,023.20

Finding the Fourth Proportional to 1,538,440.80, 2,123,017.20 and 935,023.20

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Solution

The fourth proportional to 1,538,440.80, 2,123,017.20 and 935,023.20 is: 1,290,313.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538,440.80 : 2,123,017.20 = 935,023.20 : x
  2. Step 2: Convert to fraction form
    1,538,440.80/2,123,017.20 = 935,023.20/x
  3. Step 3: Cross multiply
    1,538,440.80x = 2,123,017.20 × 935,023.20
  4. Step 4: Simplify right side
    1,538,440.80x = 1,985,070,335,999.04
  5. Step 5: Solve for x
    x = 1,985,070,335,999.04/1,538,440.80
  6. Step 6: Final answer
    x = 1,290,313.11

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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.