Home / 426,620.34-639,930.51-127,093.19

Finding the Fourth Proportional to 426,620.34, 639,930.51 and 127,093.19

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Solution

The fourth proportional to 426,620.34, 639,930.51 and 127,093.19 is: 190,639.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,620.34 : 639,930.51 = 127,093.19 : x
  2. Step 2: Convert to fraction form
    426,620.34/639,930.51 = 127,093.19/x
  3. Step 3: Cross multiply
    426,620.34x = 639,930.51 × 127,093.19
  4. Step 4: Simplify right side
    426,620.34x = 81,330,806,694.57
  5. Step 5: Solve for x
    x = 81,330,806,694.57/426,620.34
  6. Step 6: Final answer
    x = 190,639.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.