Home / 1,311,722.31-1,968,704.99-513,564.36

Finding the Fourth Proportional to 1,311,722.31, 1,968,704.99 and 513,564.36

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Solution

The fourth proportional to 1,311,722.31, 1,968,704.99 and 513,564.36 is: 770,785.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,722.31 : 1,968,704.99 = 513,564.36 : x
  2. Step 2: Convert to fraction form
    1,311,722.31/1,968,704.99 = 513,564.36/x
  3. Step 3: Cross multiply
    1,311,722.31x = 1,968,704.99 × 513,564.36
  4. Step 4: Simplify right side
    1,311,722.31x = 1,011,056,718,218.16
  5. Step 5: Solve for x
    x = 1,011,056,718,218.16/1,311,722.31
  6. Step 6: Final answer
    x = 770,785.64

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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.