Home / 430,536.56-645,805.38-205,844.18

Finding the Fourth Proportional to 430,536.56, 645,805.38 and 205,844.18

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Solution

The fourth proportional to 430,536.56, 645,805.38 and 205,844.18 is: 308,766.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,536.56 : 645,805.38 = 205,844.18 : x
  2. Step 2: Convert to fraction form
    430,536.56/645,805.38 = 205,844.18/x
  3. Step 3: Cross multiply
    430,536.56x = 645,805.38 × 205,844.18
  4. Step 4: Simplify right side
    430,536.56x = 132,935,278,885.69
  5. Step 5: Solve for x
    x = 132,935,278,885.69/430,536.56
  6. Step 6: Final answer
    x = 308,766.53

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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.