Home / 1,115,043.38-1,538,636.44-618,314.78

Finding the Fourth Proportional to 1,115,043.38, 1,538,636.44 and 618,314.78

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Solution

The fourth proportional to 1,115,043.38, 1,538,636.44 and 618,314.78 is: 853,205.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,043.38 : 1,538,636.44 = 618,314.78 : x
  2. Step 2: Convert to fraction form
    1,115,043.38/1,538,636.44 = 618,314.78/x
  3. Step 3: Cross multiply
    1,115,043.38x = 1,538,636.44 × 618,314.78
  4. Step 4: Simplify right side
    1,115,043.38x = 951,361,651,898.58
  5. Step 5: Solve for x
    x = 951,361,651,898.58/1,115,043.38
  6. Step 6: Final answer
    x = 853,205.96

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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.