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Finding the Fourth Proportional to 660,589.52, 911,991.24 and 434,891.12

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Solution

The fourth proportional to 660,589.52, 911,991.24 and 434,891.12 is: 600,398.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,589.52 : 911,991.24 = 434,891.12 : x
  2. Step 2: Convert to fraction form
    660,589.52/911,991.24 = 434,891.12/x
  3. Step 3: Cross multiply
    660,589.52x = 911,991.24 × 434,891.12
  4. Step 4: Simplify right side
    660,589.52x = 396,616,891,793.79
  5. Step 5: Solve for x
    x = 396,616,891,793.79/660,589.52
  6. Step 6: Final answer
    x = 600,398.40

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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.