Home / 1,321,382.64-1,823,763.60-861,699.12

Finding the Fourth Proportional to 1,321,382.64, 1,823,763.60 and 861,699.12

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Solution

The fourth proportional to 1,321,382.64, 1,823,763.60 and 861,699.12 is: 1,189,311.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,382.64 : 1,823,763.60 = 861,699.12 : x
  2. Step 2: Convert to fraction form
    1,321,382.64/1,823,763.60 = 861,699.12/x
  3. Step 3: Cross multiply
    1,321,382.64x = 1,823,763.60 × 861,699.12
  4. Step 4: Simplify right side
    1,321,382.64x = 1,571,535,489,208.03
  5. Step 5: Solve for x
    x = 1,571,535,489,208.03/1,321,382.64
  6. Step 6: Final answer
    x = 1,189,311.44

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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.