Home / 811,838.62-1,120,326.22-449,240.39

Finding the Fourth Proportional to 811,838.62, 1,120,326.22 and 449,240.39

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Solution

The fourth proportional to 811,838.62, 1,120,326.22 and 449,240.39 is: 619,945.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,838.62 : 1,120,326.22 = 449,240.39 : x
  2. Step 2: Convert to fraction form
    811,838.62/1,120,326.22 = 449,240.39/x
  3. Step 3: Cross multiply
    811,838.62x = 1,120,326.22 × 449,240.39
  4. Step 4: Simplify right side
    811,838.62x = 503,295,788,000.03
  5. Step 5: Solve for x
    x = 503,295,788,000.03/811,838.62
  6. Step 6: Final answer
    x = 619,945.61

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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.