Home / 521,689.56-719,917.65-306,842.73

Finding the Fourth Proportional to 521,689.56, 719,917.65 and 306,842.73

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Solution

The fourth proportional to 521,689.56, 719,917.65 and 306,842.73 is: 423,434.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,689.56 : 719,917.65 = 306,842.73 : x
  2. Step 2: Convert to fraction form
    521,689.56/719,917.65 = 306,842.73/x
  3. Step 3: Cross multiply
    521,689.56x = 719,917.65 × 306,842.73
  4. Step 4: Simplify right side
    521,689.56x = 220,901,497,101.18
  5. Step 5: Solve for x
    x = 220,901,497,101.18/521,689.56
  6. Step 6: Final answer
    x = 423,434.77

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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.