Home / 781,542.56-1,078,528.74-442,003.52

Finding the Fourth Proportional to 781,542.56, 1,078,528.74 and 442,003.52

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Solution

The fourth proportional to 781,542.56, 1,078,528.74 and 442,003.52 is: 609,964.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,542.56 : 1,078,528.74 = 442,003.52 : x
  2. Step 2: Convert to fraction form
    781,542.56/1,078,528.74 = 442,003.52/x
  3. Step 3: Cross multiply
    781,542.56x = 1,078,528.74 × 442,003.52
  4. Step 4: Simplify right side
    781,542.56x = 476,713,500,539.97
  5. Step 5: Solve for x
    x = 476,713,500,539.97/781,542.56
  6. Step 6: Final answer
    x = 609,964.86

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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.