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Finding the Fourth Proportional to 580,618.40, 870,982.38 and 225,659.60

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Solution

The fourth proportional to 580,618.40, 870,982.38 and 225,659.60 is: 338,510.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,618.40 : 870,982.38 = 225,659.60 : x
  2. Step 2: Convert to fraction form
    580,618.40/870,982.38 = 225,659.60/x
  3. Step 3: Cross multiply
    580,618.40x = 870,982.38 × 225,659.60
  4. Step 4: Simplify right side
    580,618.40x = 196,545,535,477.85
  5. Step 5: Solve for x
    x = 196,545,535,477.85/580,618.40
  6. Step 6: Final answer
    x = 338,510.69

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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.