Home / 669,720.96-1,005,073.92-492,713.28

Finding the Fourth Proportional to 669,720.96, 1,005,073.92 and 492,713.28

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Solution

The fourth proportional to 669,720.96, 1,005,073.92 and 492,713.28 is: 739,432.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,720.96 : 1,005,073.92 = 492,713.28 : x
  2. Step 2: Convert to fraction form
    669,720.96/1,005,073.92 = 492,713.28/x
  3. Step 3: Cross multiply
    669,720.96x = 1,005,073.92 × 492,713.28
  4. Step 4: Simplify right side
    669,720.96x = 495,213,267,765.66
  5. Step 5: Solve for x
    x = 495,213,267,765.66/669,720.96
  6. Step 6: Final answer
    x = 739,432.24

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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.