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Finding the Fourth Proportional to 408,042.60, 612,063.90 and 283,626.60

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Solution

The fourth proportional to 408,042.60, 612,063.90 and 283,626.60 is: 425,439.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,042.60 : 612,063.90 = 283,626.60 : x
  2. Step 2: Convert to fraction form
    408,042.60/612,063.90 = 283,626.60/x
  3. Step 3: Cross multiply
    408,042.60x = 612,063.90 × 283,626.60
  4. Step 4: Simplify right side
    408,042.60x = 173,597,602,939.74
  5. Step 5: Solve for x
    x = 173,597,602,939.74/408,042.60
  6. Step 6: Final answer
    x = 425,439.90

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1.5x scale

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.