Home / 1,321,374.10-1,823,751.88-861,690.60

Finding the Fourth Proportional to 1,321,374.10, 1,823,751.88 and 861,690.60

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Solution

The fourth proportional to 1,321,374.10, 1,823,751.88 and 861,690.60 is: 1,189,299.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,374.10 : 1,823,751.88 = 861,690.60 : x
  2. Step 2: Convert to fraction form
    1,321,374.10/1,823,751.88 = 861,690.60/x
  3. Step 3: Cross multiply
    1,321,374.10x = 1,823,751.88 × 861,690.60
  4. Step 4: Simplify right side
    1,321,374.10x = 1,571,509,851,728.33
  5. Step 5: Solve for x
    x = 1,571,509,851,728.33/1,321,374.10
  6. Step 6: Final answer
    x = 1,189,299.72

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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.