Home / 1,321,369.65-1,823,745.75-861,686.16

Finding the Fourth Proportional to 1,321,369.65, 1,823,745.75 and 861,686.16

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Solution

The fourth proportional to 1,321,369.65, 1,823,745.75 and 861,686.16 is: 1,189,293.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,369.65 : 1,823,745.75 = 861,686.16 : x
  2. Step 2: Convert to fraction form
    1,321,369.65/1,823,745.75 = 861,686.16/x
  3. Step 3: Cross multiply
    1,321,369.65x = 1,823,745.75 × 861,686.16
  4. Step 4: Simplify right side
    1,321,369.65x = 1,571,496,458,706.66
  5. Step 5: Solve for x
    x = 1,571,496,458,706.66/1,321,369.65
  6. Step 6: Final answer
    x = 1,189,293.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.