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Finding the Fourth Proportional to 407,611.80, 612,073.80 and 275,079.60

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Solution

The fourth proportional to 407,611.80, 612,073.80 and 275,079.60 is: 413,062.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,611.80 : 612,073.80 = 275,079.60 : x
  2. Step 2: Convert to fraction form
    407,611.80/612,073.80 = 275,079.60/x
  3. Step 3: Cross multiply
    407,611.80x = 612,073.80 × 275,079.60
  4. Step 4: Simplify right side
    407,611.80x = 168,369,016,074.48
  5. Step 5: Solve for x
    x = 168,369,016,074.48/407,611.80
  6. Step 6: Final answer
    x = 413,062.17

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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.