Home / 1,311,143.09-1,966,711.77-412,663.37

Finding the Fourth Proportional to 1,311,143.09, 1,966,711.77 and 412,663.37

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Solution

The fourth proportional to 1,311,143.09, 1,966,711.77 and 412,663.37 is: 618,994.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,143.09 : 1,966,711.77 = 412,663.37 : x
  2. Step 2: Convert to fraction form
    1,311,143.09/1,966,711.77 = 412,663.37/x
  3. Step 3: Cross multiply
    1,311,143.09x = 1,966,711.77 × 412,663.37
  4. Step 4: Simplify right side
    1,311,143.09x = 811,589,896,993.31
  5. Step 5: Solve for x
    x = 811,589,896,993.31/1,311,143.09
  6. Step 6: Final answer
    x = 618,994.15

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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.