Home / 780,040.60-1,170,449.70-443,339.80

Finding the Fourth Proportional to 780,040.60, 1,170,449.70 and 443,339.80

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Solution

The fourth proportional to 780,040.60, 1,170,449.70 and 443,339.80 is: 665,230.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,040.60 : 1,170,449.70 = 443,339.80 : x
  2. Step 2: Convert to fraction form
    780,040.60/1,170,449.70 = 443,339.80/x
  3. Step 3: Cross multiply
    780,040.60x = 1,170,449.70 × 443,339.80
  4. Step 4: Simplify right side
    780,040.60x = 518,906,935,908.06
  5. Step 5: Solve for x
    x = 518,906,935,908.06/780,040.60
  6. Step 6: Final answer
    x = 665,230.68

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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.