Home / 1,098,179.87-1,515,442.71-639,306.26

Finding the Fourth Proportional to 1,098,179.87, 1,515,442.71 and 639,306.26

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Solution

The fourth proportional to 1,098,179.87, 1,515,442.71 and 639,306.26 is: 882,216.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,179.87 : 1,515,442.71 = 639,306.26 : x
  2. Step 2: Convert to fraction form
    1,098,179.87/1,515,442.71 = 639,306.26/x
  3. Step 3: Cross multiply
    1,098,179.87x = 1,515,442.71 × 639,306.26
  4. Step 4: Simplify right side
    1,098,179.87x = 968,832,003,597.15
  5. Step 5: Solve for x
    x = 968,832,003,597.15/1,098,179.87
  6. Step 6: Final answer
    x = 882,216.14

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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.