Home / 509,201.12-702,708.66-279,761.36

Finding the Fourth Proportional to 509,201.12, 702,708.66 and 279,761.36

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Solution

The fourth proportional to 509,201.12, 702,708.66 and 279,761.36 is: 386,076.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,201.12 : 702,708.66 = 279,761.36 : x
  2. Step 2: Convert to fraction form
    509,201.12/702,708.66 = 279,761.36/x
  3. Step 3: Cross multiply
    509,201.12x = 702,708.66 × 279,761.36
  4. Step 4: Simplify right side
    509,201.12x = 196,590,730,405.38
  5. Step 5: Solve for x
    x = 196,590,730,405.38/509,201.12
  6. Step 6: Final answer
    x = 386,076.78

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1.5x scale

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.