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Finding the Fourth Proportional to 408,046.70, 612,070.05 and 380,053.10

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Solution

The fourth proportional to 408,046.70, 612,070.05 and 380,053.10 is: 570,079.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,046.70 : 612,070.05 = 380,053.10 : x
  2. Step 2: Convert to fraction form
    408,046.70/612,070.05 = 380,053.10/x
  3. Step 3: Cross multiply
    408,046.70x = 612,070.05 × 380,053.10
  4. Step 4: Simplify right side
    408,046.70x = 232,619,119,919.66
  5. Step 5: Solve for x
    x = 232,619,119,919.66/408,046.70
  6. Step 6: Final answer
    x = 570,079.65

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Similar ratio
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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.