Home / 1,115,110.72-1,538,757.18-618,410.56

Finding the Fourth Proportional to 1,115,110.72, 1,538,757.18 and 618,410.56

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Solution

The fourth proportional to 1,115,110.72, 1,538,757.18 and 618,410.56 is: 853,353.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,110.72 : 1,538,757.18 = 618,410.56 : x
  2. Step 2: Convert to fraction form
    1,115,110.72/1,538,757.18 = 618,410.56/x
  3. Step 3: Cross multiply
    1,115,110.72x = 1,538,757.18 × 618,410.56
  4. Step 4: Simplify right side
    1,115,110.72x = 951,583,689,387.82
  5. Step 5: Solve for x
    x = 951,583,689,387.82/1,115,110.72
  6. Step 6: Final answer
    x = 853,353.55

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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.