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Finding the Fourth Proportional to 648,216.80, 894,432.20 and 361,736.20

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Solution

The fourth proportional to 648,216.80, 894,432.20 and 361,736.20 is: 499,136.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,216.80 : 894,432.20 = 361,736.20 : x
  2. Step 2: Convert to fraction form
    648,216.80/894,432.20 = 361,736.20/x
  3. Step 3: Cross multiply
    648,216.80x = 894,432.20 × 361,736.20
  4. Step 4: Simplify right side
    648,216.80x = 323,548,505,185.64
  5. Step 5: Solve for x
    x = 323,548,505,185.64/648,216.80
  6. Step 6: Final answer
    x = 499,136.25

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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.