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Finding the Fourth Proportional to 550,233.20, 825,349.80 and 339,989.60

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Solution

The fourth proportional to 550,233.20, 825,349.80 and 339,989.60 is: 509,984.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,233.20 : 825,349.80 = 339,989.60 : x
  2. Step 2: Convert to fraction form
    550,233.20/825,349.80 = 339,989.60/x
  3. Step 3: Cross multiply
    550,233.20x = 825,349.80 × 339,989.60
  4. Step 4: Simplify right side
    550,233.20x = 280,610,348,362.08
  5. Step 5: Solve for x
    x = 280,610,348,362.08/550,233.20
  6. Step 6: Final answer
    x = 509,984.40

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Double scale
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Similar ratio
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1.5x scale

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.