Home / 818,110.10-1,227,165.15-257,144.60

Finding the Fourth Proportional to 818,110.10, 1,227,165.15 and 257,144.60

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Solution

The fourth proportional to 818,110.10, 1,227,165.15 and 257,144.60 is: 385,716.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,110.10 : 1,227,165.15 = 257,144.60 : x
  2. Step 2: Convert to fraction form
    818,110.10/1,227,165.15 = 257,144.60/x
  3. Step 3: Cross multiply
    818,110.10x = 1,227,165.15 × 257,144.60
  4. Step 4: Simplify right side
    818,110.10x = 315,558,891,630.69
  5. Step 5: Solve for x
    x = 315,558,891,630.69/818,110.10
  6. Step 6: Final answer
    x = 385,716.90

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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.