Home / 644,623.60-966,938.10-218,162.80

Finding the Fourth Proportional to 644,623.60, 966,938.10 and 218,162.80

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Solution

The fourth proportional to 644,623.60, 966,938.10 and 218,162.80 is: 327,245.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,623.60 : 966,938.10 = 218,162.80 : x
  2. Step 2: Convert to fraction form
    644,623.60/966,938.10 = 218,162.80/x
  3. Step 3: Cross multiply
    644,623.60x = 966,938.10 × 218,162.80
  4. Step 4: Simplify right side
    644,623.60x = 210,949,923,322.68
  5. Step 5: Solve for x
    x = 210,949,923,322.68/644,623.60
  6. Step 6: Final answer
    x = 327,245.11

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Double scale
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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.