Home / 851,248.60-1,276,872.90-431,344.60

Finding the Fourth Proportional to 851,248.60, 1,276,872.90 and 431,344.60

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Solution

The fourth proportional to 851,248.60, 1,276,872.90 and 431,344.60 is: 647,016.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,248.60 : 1,276,872.90 = 431,344.60 : x
  2. Step 2: Convert to fraction form
    851,248.60/1,276,872.90 = 431,344.60/x
  3. Step 3: Cross multiply
    851,248.60x = 1,276,872.90 × 431,344.60
  4. Step 4: Simplify right side
    851,248.60x = 550,772,230,301.34
  5. Step 5: Solve for x
    x = 550,772,230,301.34/851,248.60
  6. Step 6: Final answer
    x = 647,016.90

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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.