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Finding the Fourth Proportional to 648,228.30, 972,342.45 and 274,202.70

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Solution

The fourth proportional to 648,228.30, 972,342.45 and 274,202.70 is: 411,304.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,228.30 : 972,342.45 = 274,202.70 : x
  2. Step 2: Convert to fraction form
    648,228.30/972,342.45 = 274,202.70/x
  3. Step 3: Cross multiply
    648,228.30x = 972,342.45 × 274,202.70
  4. Step 4: Simplify right side
    648,228.30x = 266,618,925,114.62
  5. Step 5: Solve for x
    x = 266,618,925,114.62/648,228.30
  6. Step 6: Final answer
    x = 411,304.05

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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.