Home / 880,749.20-1,321,123.80-319,710.80

Finding the Fourth Proportional to 880,749.20, 1,321,123.80 and 319,710.80

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Solution

The fourth proportional to 880,749.20, 1,321,123.80 and 319,710.80 is: 479,566.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,749.20 : 1,321,123.80 = 319,710.80 : x
  2. Step 2: Convert to fraction form
    880,749.20/1,321,123.80 = 319,710.80/x
  3. Step 3: Cross multiply
    880,749.20x = 1,321,123.80 × 319,710.80
  4. Step 4: Simplify right side
    880,749.20x = 422,377,546,997.04
  5. Step 5: Solve for x
    x = 422,377,546,997.04/880,749.20
  6. Step 6: Final answer
    x = 479,566.20

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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.