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Finding the Fourth Proportional to 580,643.45, 870,740.53 and 225,610.73

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Solution

The fourth proportional to 580,643.45, 870,740.53 and 225,610.73 is: 338,328.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,643.45 : 870,740.53 = 225,610.73 : x
  2. Step 2: Convert to fraction form
    580,643.45/870,740.53 = 225,610.73/x
  3. Step 3: Cross multiply
    580,643.45x = 870,740.53 × 225,610.73
  4. Step 4: Simplify right side
    580,643.45x = 196,448,406,613.89
  5. Step 5: Solve for x
    x = 196,448,406,613.89/580,643.45
  6. Step 6: Final answer
    x = 338,328.81

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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.