Home / 811,799.89-1,120,267.09-449,223.54

Finding the Fourth Proportional to 811,799.89, 1,120,267.09 and 449,223.54

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Solution

The fourth proportional to 811,799.89, 1,120,267.09 and 449,223.54 is: 619,919.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,799.89 : 1,120,267.09 = 449,223.54 : x
  2. Step 2: Convert to fraction form
    811,799.89/1,120,267.09 = 449,223.54/x
  3. Step 3: Cross multiply
    811,799.89x = 1,120,267.09 × 449,223.54
  4. Step 4: Simplify right side
    811,799.89x = 503,250,347,915.30
  5. Step 5: Solve for x
    x = 503,250,347,915.30/811,799.89
  6. Step 6: Final answer
    x = 619,919.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.