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Finding the Fourth Proportional to 580,147.72, 800,561.28 and 322,039.60

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Solution

The fourth proportional to 580,147.72, 800,561.28 and 322,039.60 is: 444,391.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,147.72 : 800,561.28 = 322,039.60 : x
  2. Step 2: Convert to fraction form
    580,147.72/800,561.28 = 322,039.60/x
  3. Step 3: Cross multiply
    580,147.72x = 800,561.28 × 322,039.60
  4. Step 4: Simplify right side
    580,147.72x = 257,812,434,386.69
  5. Step 5: Solve for x
    x = 257,812,434,386.69/580,147.72
  6. Step 6: Final answer
    x = 444,391.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.