Home / 810,436.20-1,214,911.20-311,424.36

Finding the Fourth Proportional to 810,436.20, 1,214,911.20 and 311,424.36

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Solution

The fourth proportional to 810,436.20, 1,214,911.20 and 311,424.36 is: 466,850.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,436.20 : 1,214,911.20 = 311,424.36 : x
  2. Step 2: Convert to fraction form
    810,436.20/1,214,911.20 = 311,424.36/x
  3. Step 3: Cross multiply
    810,436.20x = 1,214,911.20 × 311,424.36
  4. Step 4: Simplify right side
    810,436.20x = 378,352,942,916.83
  5. Step 5: Solve for x
    x = 378,352,942,916.83/810,436.20
  6. Step 6: Final answer
    x = 466,850.99

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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.