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Finding the Fourth Proportional to 613,293.20, 919,939.80 and 276,713.90

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Solution

The fourth proportional to 613,293.20, 919,939.80 and 276,713.90 is: 415,070.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,293.20 : 919,939.80 = 276,713.90 : x
  2. Step 2: Convert to fraction form
    613,293.20/919,939.80 = 276,713.90/x
  3. Step 3: Cross multiply
    613,293.20x = 919,939.80 × 276,713.90
  4. Step 4: Simplify right side
    613,293.20x = 254,560,129,823.22
  5. Step 5: Solve for x
    x = 254,560,129,823.22/613,293.20
  6. Step 6: Final answer
    x = 415,070.85

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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.