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Finding the Fourth Proportional to 580,136.65, 800,576.17 and 321,998.55

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Solution

The fourth proportional to 580,136.65, 800,576.17 and 321,998.55 is: 444,351.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,136.65 : 800,576.17 = 321,998.55 : x
  2. Step 2: Convert to fraction form
    580,136.65/800,576.17 = 321,998.55/x
  3. Step 3: Cross multiply
    580,136.65x = 800,576.17 × 321,998.55
  4. Step 4: Simplify right side
    580,136.65x = 257,784,365,904.55
  5. Step 5: Solve for x
    x = 257,784,365,904.55/580,136.65
  6. Step 6: Final answer
    x = 444,351.11

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1.5x scale

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.