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Finding the Fourth Proportional to 385,570.20, 579,737.70 and 324,744.60

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Solution

The fourth proportional to 385,570.20, 579,737.70 and 324,744.60 is: 488,281.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,570.20 : 579,737.70 = 324,744.60 : x
  2. Step 2: Convert to fraction form
    385,570.20/579,737.70 = 324,744.60/x
  3. Step 3: Cross multiply
    385,570.20x = 579,737.70 × 324,744.60
  4. Step 4: Simplify right side
    385,570.20x = 188,266,687,491.42
  5. Step 5: Solve for x
    x = 188,266,687,491.42/385,570.20
  6. Step 6: Final answer
    x = 488,281.22

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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.