Home / 1,204,664.40-1,662,489-721,135.98

Finding the Fourth Proportional to 1,204,664.40, 1,662,489 and 721,135.98

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Solution

The fourth proportional to 1,204,664.40, 1,662,489 and 721,135.98 is: 995,198.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,204,664.40 : 1,662,489 = 721,135.98 : x
  2. Step 2: Convert to fraction form
    1,204,664.40/1,662,489 = 721,135.98/x
  3. Step 3: Cross multiply
    1,204,664.40x = 1,662,489 × 721,135.98
  4. Step 4: Simplify right side
    1,204,664.40x = 1,198,880,634,254.22
  5. Step 5: Solve for x
    x = 1,198,880,634,254.22/1,204,664.40
  6. Step 6: Final answer
    x = 995,198.86

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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.