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Finding the Fourth Proportional to 609,724.80, 911,995.20 and 546,998.40

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Solution

The fourth proportional to 609,724.80, 911,995.20 and 546,998.40 is: 818,172.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,724.80 : 911,995.20 = 546,998.40 : x
  2. Step 2: Convert to fraction form
    609,724.80/911,995.20 = 546,998.40/x
  3. Step 3: Cross multiply
    609,724.80x = 911,995.20 × 546,998.40
  4. Step 4: Simplify right side
    609,724.80x = 498,859,915,207.68
  5. Step 5: Solve for x
    x = 498,859,915,207.68/609,724.80
  6. Step 6: Final answer
    x = 818,172.26

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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.