Home / 1,115,109.72-1,538,755.80-618,409.56

Finding the Fourth Proportional to 1,115,109.72, 1,538,755.80 and 618,409.56

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Solution

The fourth proportional to 1,115,109.72, 1,538,755.80 and 618,409.56 is: 853,352.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,109.72 : 1,538,755.80 = 618,409.56 : x
  2. Step 2: Convert to fraction form
    1,115,109.72/1,538,755.80 = 618,409.56/x
  3. Step 3: Cross multiply
    1,115,109.72x = 1,538,755.80 × 618,409.56
  4. Step 4: Simplify right side
    1,115,109.72x = 951,581,297,225.45
  5. Step 5: Solve for x
    x = 951,581,297,225.45/1,115,109.72
  6. Step 6: Final answer
    x = 853,352.17

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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.