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Finding the Fourth Proportional to 408,053.40, 612,080.10 and 404,116.80

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Solution

The fourth proportional to 408,053.40, 612,080.10 and 404,116.80 is: 606,175.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,053.40 : 612,080.10 = 404,116.80 : x
  2. Step 2: Convert to fraction form
    408,053.40/612,080.10 = 404,116.80/x
  3. Step 3: Cross multiply
    408,053.40x = 612,080.10 × 404,116.80
  4. Step 4: Simplify right side
    408,053.40x = 247,351,851,355.68
  5. Step 5: Solve for x
    x = 247,351,851,355.68/408,053.40
  6. Step 6: Final answer
    x = 606,175.20

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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.