Home / 656,999.20-985,498.80-213,767.20

Finding the Fourth Proportional to 656,999.20, 985,498.80 and 213,767.20

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Solution

The fourth proportional to 656,999.20, 985,498.80 and 213,767.20 is: 320,650.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,999.20 : 985,498.80 = 213,767.20 : x
  2. Step 2: Convert to fraction form
    656,999.20/985,498.80 = 213,767.20/x
  3. Step 3: Cross multiply
    656,999.20x = 985,498.80 × 213,767.20
  4. Step 4: Simplify right side
    656,999.20x = 210,667,319,079.36
  5. Step 5: Solve for x
    x = 210,667,319,079.36/656,999.20
  6. Step 6: Final answer
    x = 320,650.80

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Similar ratio
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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.