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Finding the Fourth Proportional to 488,441.40, 732,662.10 and 274,990.20

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Solution

The fourth proportional to 488,441.40, 732,662.10 and 274,990.20 is: 412,485.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,441.40 : 732,662.10 = 274,990.20 : x
  2. Step 2: Convert to fraction form
    488,441.40/732,662.10 = 274,990.20/x
  3. Step 3: Cross multiply
    488,441.40x = 732,662.10 × 274,990.20
  4. Step 4: Simplify right side
    488,441.40x = 201,474,897,411.42
  5. Step 5: Solve for x
    x = 201,474,897,411.42/488,441.40
  6. Step 6: Final answer
    x = 412,485.30

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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.