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Finding the Fourth Proportional to 488,446.40, 732,669.60 and 274,995.20

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Solution

The fourth proportional to 488,446.40, 732,669.60 and 274,995.20 is: 412,492.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,446.40 : 732,669.60 = 274,995.20 : x
  2. Step 2: Convert to fraction form
    488,446.40/732,669.60 = 274,995.20/x
  3. Step 3: Cross multiply
    488,446.40x = 732,669.60 × 274,995.20
  4. Step 4: Simplify right side
    488,446.40x = 201,480,623,185.92
  5. Step 5: Solve for x
    x = 201,480,623,185.92/488,446.40
  6. Step 6: Final answer
    x = 412,492.80

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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.