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Finding the Fourth Proportional to 490,640.60, 735,985.20 and 254,444.60

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Solution

The fourth proportional to 490,640.60, 735,985.20 and 254,444.60 is: 381,679.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,640.60 : 735,985.20 = 254,444.60 : x
  2. Step 2: Convert to fraction form
    490,640.60/735,985.20 = 254,444.60/x
  3. Step 3: Cross multiply
    490,640.60x = 735,985.20 × 254,444.60
  4. Step 4: Simplify right side
    490,640.60x = 187,267,459,819.92
  5. Step 5: Solve for x
    x = 187,267,459,819.92/490,640.60
  6. Step 6: Final answer
    x = 381,679.50

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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.