Home / 780,035.20-1,170,052.80-691,388.80

Finding the Fourth Proportional to 780,035.20, 1,170,052.80 and 691,388.80

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Solution

The fourth proportional to 780,035.20, 1,170,052.80 and 691,388.80 is: 1,037,083.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,035.20 : 1,170,052.80 = 691,388.80 : x
  2. Step 2: Convert to fraction form
    780,035.20/1,170,052.80 = 691,388.80/x
  3. Step 3: Cross multiply
    780,035.20x = 1,170,052.80 × 691,388.80
  4. Step 4: Simplify right side
    780,035.20x = 808,961,401,328.64
  5. Step 5: Solve for x
    x = 808,961,401,328.64/780,035.20
  6. Step 6: Final answer
    x = 1,037,083.20

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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.