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Finding the Fourth Proportional to 522,652.20, 784,439.10 and 448,002.60

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Solution

The fourth proportional to 522,652.20, 784,439.10 and 448,002.60 is: 672,398.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,652.20 : 784,439.10 = 448,002.60 : x
  2. Step 2: Convert to fraction form
    522,652.20/784,439.10 = 448,002.60/x
  3. Step 3: Cross multiply
    522,652.20x = 784,439.10 × 448,002.60
  4. Step 4: Simplify right side
    522,652.20x = 351,430,756,341.66
  5. Step 5: Solve for x
    x = 351,430,756,341.66/522,652.20
  6. Step 6: Final answer
    x = 672,398.88

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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.