Home / 1,123,656.09-1,550,265.54-639,878.19

Finding the Fourth Proportional to 1,123,656.09, 1,550,265.54 and 639,878.19

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Solution

The fourth proportional to 1,123,656.09, 1,550,265.54 and 639,878.19 is: 882,815.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,656.09 : 1,550,265.54 = 639,878.19 : x
  2. Step 2: Convert to fraction form
    1,123,656.09/1,550,265.54 = 639,878.19/x
  3. Step 3: Cross multiply
    1,123,656.09x = 1,550,265.54 × 639,878.19
  4. Step 4: Simplify right side
    1,123,656.09x = 991,981,107,754.57
  5. Step 5: Solve for x
    x = 991,981,107,754.57/1,123,656.09
  6. Step 6: Final answer
    x = 882,815.58

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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.