Home / 724,030.40-1,086,221.18-218,561.18

Finding the Fourth Proportional to 724,030.40, 1,086,221.18 and 218,561.18

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Solution

The fourth proportional to 724,030.40, 1,086,221.18 and 218,561.18 is: 327,894.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,030.40 : 1,086,221.18 = 218,561.18 : x
  2. Step 2: Convert to fraction form
    724,030.40/1,086,221.18 = 218,561.18/x
  3. Step 3: Cross multiply
    724,030.40x = 1,086,221.18 × 218,561.18
  4. Step 4: Simplify right side
    724,030.40x = 237,405,782,841.79
  5. Step 5: Solve for x
    x = 237,405,782,841.79/724,030.40
  6. Step 6: Final answer
    x = 327,894.77

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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.