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Finding the Fourth Proportional to 853,662.80, 1,280,117 and 454,208.88

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Solution

The fourth proportional to 853,662.80, 1,280,117 and 454,208.88 is: 681,112.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,662.80 : 1,280,117 = 454,208.88 : x
  2. Step 2: Convert to fraction form
    853,662.80/1,280,117 = 454,208.88/x
  3. Step 3: Cross multiply
    853,662.80x = 1,280,117 × 454,208.88
  4. Step 4: Simplify right side
    853,662.80x = 581,440,508,838.96
  5. Step 5: Solve for x
    x = 581,440,508,838.96/853,662.80
  6. Step 6: Final answer
    x = 681,112.62

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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.