Home / 874,092.78-1,311,139.17-313,520.94

Finding the Fourth Proportional to 874,092.78, 1,311,139.17 and 313,520.94

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Solution

The fourth proportional to 874,092.78, 1,311,139.17 and 313,520.94 is: 470,281.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,092.78 : 1,311,139.17 = 313,520.94 : x
  2. Step 2: Convert to fraction form
    874,092.78/1,311,139.17 = 313,520.94/x
  3. Step 3: Cross multiply
    874,092.78x = 1,311,139.17 × 313,520.94
  4. Step 4: Simplify right side
    874,092.78x = 411,069,585,049.22
  5. Step 5: Solve for x
    x = 411,069,585,049.22/874,092.78
  6. Step 6: Final answer
    x = 470,281.41

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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.