Home / 389,621.40-584,432.10-323,136.60

Finding the Fourth Proportional to 389,621.40, 584,432.10 and 323,136.60

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Solution

The fourth proportional to 389,621.40, 584,432.10 and 323,136.60 is: 484,704.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,621.40 : 584,432.10 = 323,136.60 : x
  2. Step 2: Convert to fraction form
    389,621.40/584,432.10 = 323,136.60/x
  3. Step 3: Cross multiply
    389,621.40x = 584,432.10 × 323,136.60
  4. Step 4: Simplify right side
    389,621.40x = 188,851,401,724.86
  5. Step 5: Solve for x
    x = 188,851,401,724.86/389,621.40
  6. Step 6: Final answer
    x = 484,704.90

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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.