Home / 1,321,920-1,824,249.60-718,308

Finding the Fourth Proportional to 1,321,920, 1,824,249.60 and 718,308

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Solution

The fourth proportional to 1,321,920, 1,824,249.60 and 718,308 is: 991,265.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,920 : 1,824,249.60 = 718,308 : x
  2. Step 2: Convert to fraction form
    1,321,920/1,824,249.60 = 718,308/x
  3. Step 3: Cross multiply
    1,321,920x = 1,824,249.60 × 718,308
  4. Step 4: Simplify right side
    1,321,920x = 1,310,373,081,676.80
  5. Step 5: Solve for x
    x = 1,310,373,081,676.80/1,321,920
  6. Step 6: Final answer
    x = 991,265.04

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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.