Home / 699,743.20-1,049,614.80-345,449.20

Finding the Fourth Proportional to 699,743.20, 1,049,614.80 and 345,449.20

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Solution

The fourth proportional to 699,743.20, 1,049,614.80 and 345,449.20 is: 518,173.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,743.20 : 1,049,614.80 = 345,449.20 : x
  2. Step 2: Convert to fraction form
    699,743.20/1,049,614.80 = 345,449.20/x
  3. Step 3: Cross multiply
    699,743.20x = 1,049,614.80 × 345,449.20
  4. Step 4: Simplify right side
    699,743.20x = 362,588,592,968.16
  5. Step 5: Solve for x
    x = 362,588,592,968.16/699,743.20
  6. Step 6: Final answer
    x = 518,173.80

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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.