Home / 811,546.89-1,216,529.22-338,367.57

Finding the Fourth Proportional to 811,546.89, 1,216,529.22 and 338,367.57

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Solution

The fourth proportional to 811,546.89, 1,216,529.22 and 338,367.57 is: 507,221.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,546.89 : 1,216,529.22 = 338,367.57 : x
  2. Step 2: Convert to fraction form
    811,546.89/1,216,529.22 = 338,367.57/x
  3. Step 3: Cross multiply
    811,546.89x = 1,216,529.22 × 338,367.57
  4. Step 4: Simplify right side
    811,546.89x = 411,634,036,005.40
  5. Step 5: Solve for x
    x = 411,634,036,005.40/811,546.89
  6. Step 6: Final answer
    x = 507,221.51

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Double scale
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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.