Home / 679,376.40-1,019,064.60-343,453.20

Finding the Fourth Proportional to 679,376.40, 1,019,064.60 and 343,453.20

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Solution

The fourth proportional to 679,376.40, 1,019,064.60 and 343,453.20 is: 515,179.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,376.40 : 1,019,064.60 = 343,453.20 : x
  2. Step 2: Convert to fraction form
    679,376.40/1,019,064.60 = 343,453.20/x
  3. Step 3: Cross multiply
    679,376.40x = 1,019,064.60 × 343,453.20
  4. Step 4: Simplify right side
    679,376.40x = 350,000,997,876.72
  5. Step 5: Solve for x
    x = 350,000,997,876.72/679,376.40
  6. Step 6: Final answer
    x = 515,179.80

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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.