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Finding the Fourth Proportional to 488,996.60, 674,814.85 and 274,136.70

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Solution

The fourth proportional to 488,996.60, 674,814.85 and 274,136.70 is: 378,308.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,996.60 : 674,814.85 = 274,136.70 : x
  2. Step 2: Convert to fraction form
    488,996.60/674,814.85 = 274,136.70/x
  3. Step 3: Cross multiply
    488,996.60x = 674,814.85 × 274,136.70
  4. Step 4: Simplify right side
    488,996.60x = 184,991,517,935.21
  5. Step 5: Solve for x
    x = 184,991,517,935.21/488,996.60
  6. Step 6: Final answer
    x = 378,308.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.