Home / 810,576.39-1,215,889.36-278,089.95

Finding the Fourth Proportional to 810,576.39, 1,215,889.36 and 278,089.95

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Solution

The fourth proportional to 810,576.39, 1,215,889.36 and 278,089.95 is: 417,143.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,576.39 : 1,215,889.36 = 278,089.95 : x
  2. Step 2: Convert to fraction form
    810,576.39/1,215,889.36 = 278,089.95/x
  3. Step 3: Cross multiply
    810,576.39x = 1,215,889.36 × 278,089.95
  4. Step 4: Simplify right side
    810,576.39x = 338,126,616,756.55
  5. Step 5: Solve for x
    x = 338,126,616,756.55/810,576.39
  6. Step 6: Final answer
    x = 417,143.43

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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.