Home / 780,084.60-1,170,515.70-443,383.80

Finding the Fourth Proportional to 780,084.60, 1,170,515.70 and 443,383.80

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Solution

The fourth proportional to 780,084.60, 1,170,515.70 and 443,383.80 is: 665,296.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,084.60 : 1,170,515.70 = 443,383.80 : x
  2. Step 2: Convert to fraction form
    780,084.60/1,170,515.70 = 443,383.80/x
  3. Step 3: Cross multiply
    780,084.60x = 1,170,515.70 × 443,383.80
  4. Step 4: Simplify right side
    780,084.60x = 518,987,699,025.66
  5. Step 5: Solve for x
    x = 518,987,699,025.66/780,084.60
  6. Step 6: Final answer
    x = 665,296.69

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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.