Home / 781,549.50-1,078,538.31-442,010.46

Finding the Fourth Proportional to 781,549.50, 1,078,538.31 and 442,010.46

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Solution

The fourth proportional to 781,549.50, 1,078,538.31 and 442,010.46 is: 609,974.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,549.50 : 1,078,538.31 = 442,010.46 : x
  2. Step 2: Convert to fraction form
    781,549.50/1,078,538.31 = 442,010.46/x
  3. Step 3: Cross multiply
    781,549.50x = 1,078,538.31 × 442,010.46
  4. Step 4: Simplify right side
    781,549.50x = 476,725,214,530.72
  5. Step 5: Solve for x
    x = 476,725,214,530.72/781,549.50
  6. Step 6: Final answer
    x = 609,974.43

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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.