Home / 780,107.60-1,170,550.20-443,406.80

Finding the Fourth Proportional to 780,107.60, 1,170,550.20 and 443,406.80

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Solution

The fourth proportional to 780,107.60, 1,170,550.20 and 443,406.80 is: 665,331.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,107.60 : 1,170,550.20 = 443,406.80 : x
  2. Step 2: Convert to fraction form
    780,107.60/1,170,550.20 = 443,406.80/x
  3. Step 3: Cross multiply
    780,107.60x = 1,170,550.20 × 443,406.80
  4. Step 4: Simplify right side
    780,107.60x = 519,029,918,421.36
  5. Step 5: Solve for x
    x = 519,029,918,421.36/780,107.60
  6. Step 6: Final answer
    x = 665,331.19

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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.