Home / 851,230.20-1,276,845.30-345,790.20

Finding the Fourth Proportional to 851,230.20, 1,276,845.30 and 345,790.20

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Solution

The fourth proportional to 851,230.20, 1,276,845.30 and 345,790.20 is: 518,685.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,230.20 : 1,276,845.30 = 345,790.20 : x
  2. Step 2: Convert to fraction form
    851,230.20/1,276,845.30 = 345,790.20/x
  3. Step 3: Cross multiply
    851,230.20x = 1,276,845.30 × 345,790.20
  4. Step 4: Simplify right side
    851,230.20x = 441,520,591,656.06
  5. Step 5: Solve for x
    x = 441,520,591,656.06/851,230.20
  6. Step 6: Final answer
    x = 518,685.30

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Half scale
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Double scale
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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.