Home / 1,302,619.29-1,797,671.91-721,840.78

Finding the Fourth Proportional to 1,302,619.29, 1,797,671.91 and 721,840.78

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Solution

The fourth proportional to 1,302,619.29, 1,797,671.91 and 721,840.78 is: 996,172.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,302,619.29 : 1,797,671.91 = 721,840.78 : x
  2. Step 2: Convert to fraction form
    1,302,619.29/1,797,671.91 = 721,840.78/x
  3. Step 3: Cross multiply
    1,302,619.29x = 1,797,671.91 × 721,840.78
  4. Step 4: Simplify right side
    1,302,619.29x = 1,297,632,893,698.49
  5. Step 5: Solve for x
    x = 1,297,632,893,698.49/1,302,619.29
  6. Step 6: Final answer
    x = 996,172.02

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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.