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Finding the Fourth Proportional to 645,042.80, 967,218.60 and 270,642.80

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Solution

The fourth proportional to 645,042.80, 967,218.60 and 270,642.80 is: 405,819.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,042.80 : 967,218.60 = 270,642.80 : x
  2. Step 2: Convert to fraction form
    645,042.80/967,218.60 = 270,642.80/x
  3. Step 3: Cross multiply
    645,042.80x = 967,218.60 × 270,642.80
  4. Step 4: Simplify right side
    645,042.80x = 261,770,750,116.08
  5. Step 5: Solve for x
    x = 261,770,750,116.08/645,042.80
  6. Step 6: Final answer
    x = 405,819.20

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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.