Home / 811,697.76-1,120,046.94-449,073.72

Finding the Fourth Proportional to 811,697.76, 1,120,046.94 and 449,073.72

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Solution

The fourth proportional to 811,697.76, 1,120,046.94 and 449,073.72 is: 619,668.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,697.76 : 1,120,046.94 = 449,073.72 : x
  2. Step 2: Convert to fraction form
    811,697.76/1,120,046.94 = 449,073.72/x
  3. Step 3: Cross multiply
    811,697.76x = 1,120,046.94 × 449,073.72
  4. Step 4: Simplify right side
    811,697.76x = 502,983,645,920.42
  5. Step 5: Solve for x
    x = 502,983,645,920.42/811,697.76
  6. Step 6: Final answer
    x = 619,668.64

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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.