Home / 880,820.70-1,321,749.45-319,782.30

Finding the Fourth Proportional to 880,820.70, 1,321,749.45 and 319,782.30

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Solution

The fourth proportional to 880,820.70, 1,321,749.45 and 319,782.30 is: 479,861.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,820.70 : 1,321,749.45 = 319,782.30 : x
  2. Step 2: Convert to fraction form
    880,820.70/1,321,749.45 = 319,782.30/x
  3. Step 3: Cross multiply
    880,820.70x = 1,321,749.45 × 319,782.30
  4. Step 4: Simplify right side
    880,820.70x = 422,672,079,144.74
  5. Step 5: Solve for x
    x = 422,672,079,144.74/880,820.70
  6. Step 6: Final answer
    x = 479,861.66

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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.