Home / 780,266.40-1,170,399.60-768,456.60

Finding the Fourth Proportional to 780,266.40, 1,170,399.60 and 768,456.60

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Solution

The fourth proportional to 780,266.40, 1,170,399.60 and 768,456.60 is: 1,152,684.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,266.40 : 1,170,399.60 = 768,456.60 : x
  2. Step 2: Convert to fraction form
    780,266.40/1,170,399.60 = 768,456.60/x
  3. Step 3: Cross multiply
    780,266.40x = 1,170,399.60 × 768,456.60
  4. Step 4: Simplify right side
    780,266.40x = 899,401,297,257.36
  5. Step 5: Solve for x
    x = 899,401,297,257.36/780,266.40
  6. Step 6: Final answer
    x = 1,152,684.90

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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.