Home / 780,082.60-1,170,512.70-443,381.80

Finding the Fourth Proportional to 780,082.60, 1,170,512.70 and 443,381.80

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Solution

The fourth proportional to 780,082.60, 1,170,512.70 and 443,381.80 is: 665,293.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,082.60 : 1,170,512.70 = 443,381.80 : x
  2. Step 2: Convert to fraction form
    780,082.60/1,170,512.70 = 443,381.80/x
  3. Step 3: Cross multiply
    780,082.60x = 1,170,512.70 × 443,381.80
  4. Step 4: Simplify right side
    780,082.60x = 518,984,027,848.86
  5. Step 5: Solve for x
    x = 518,984,027,848.86/780,082.60
  6. Step 6: Final answer
    x = 665,293.69

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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.