Home / 711,236.80-1,066,855.20-212,600.80

Finding the Fourth Proportional to 711,236.80, 1,066,855.20 and 212,600.80

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Solution

The fourth proportional to 711,236.80, 1,066,855.20 and 212,600.80 is: 318,901.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,236.80 : 1,066,855.20 = 212,600.80 : x
  2. Step 2: Convert to fraction form
    711,236.80/1,066,855.20 = 212,600.80/x
  3. Step 3: Cross multiply
    711,236.80x = 1,066,855.20 × 212,600.80
  4. Step 4: Simplify right side
    711,236.80x = 226,814,269,004.16
  5. Step 5: Solve for x
    x = 226,814,269,004.16/711,236.80
  6. Step 6: Final answer
    x = 318,901.20

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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.