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Finding the Fourth Proportional to 648,225.38, 972,441.76 and 274,251.62

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Solution

The fourth proportional to 648,225.38, 972,441.76 and 274,251.62 is: 411,421.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,225.38 : 972,441.76 = 274,251.62 : x
  2. Step 2: Convert to fraction form
    648,225.38/972,441.76 = 274,251.62/x
  3. Step 3: Cross multiply
    648,225.38x = 972,441.76 × 274,251.62
  4. Step 4: Simplify right side
    648,225.38x = 266,693,728,035.65
  5. Step 5: Solve for x
    x = 266,693,728,035.65/648,225.38
  6. Step 6: Final answer
    x = 411,421.30

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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.