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Finding the Fourth Proportional to 656,999.70, 985,499.55 and 213,767.70

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Solution

The fourth proportional to 656,999.70, 985,499.55 and 213,767.70 is: 320,651.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,999.70 : 985,499.55 = 213,767.70 : x
  2. Step 2: Convert to fraction form
    656,999.70/985,499.55 = 213,767.70/x
  3. Step 3: Cross multiply
    656,999.70x = 985,499.55 × 213,767.70
  4. Step 4: Simplify right side
    656,999.70x = 210,667,972,154.54
  5. Step 5: Solve for x
    x = 210,667,972,154.54/656,999.70
  6. Step 6: Final answer
    x = 320,651.55

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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.