Home / 781,778.31-1,172,372.21-332,710.66

Finding the Fourth Proportional to 781,778.31, 1,172,372.21 and 332,710.66

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Solution

The fourth proportional to 781,778.31, 1,172,372.21 and 332,710.66 is: 498,940.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,778.31 : 1,172,372.21 = 332,710.66 : x
  2. Step 2: Convert to fraction form
    781,778.31/1,172,372.21 = 332,710.66/x
  3. Step 3: Cross multiply
    781,778.31x = 1,172,372.21 × 332,710.66
  4. Step 4: Simplify right side
    781,778.31x = 390,060,731,754.76
  5. Step 5: Solve for x
    x = 390,060,731,754.76/781,778.31
  6. Step 6: Final answer
    x = 498,940.33

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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.