Home / 811,770.45-1,217,458.84-338,197.47

Finding the Fourth Proportional to 811,770.45, 1,217,458.84 and 338,197.47

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Solution

The fourth proportional to 811,770.45, 1,217,458.84 and 338,197.47 is: 507,214.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,770.45 : 1,217,458.84 = 338,197.47 : x
  2. Step 2: Convert to fraction form
    811,770.45/1,217,458.84 = 338,197.47/x
  3. Step 3: Cross multiply
    811,770.45x = 1,217,458.84 × 338,197.47
  4. Step 4: Simplify right side
    811,770.45x = 411,741,499,517.14
  5. Step 5: Solve for x
    x = 411,741,499,517.14/811,770.45
  6. Step 6: Final answer
    x = 507,214.20

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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.