Home / 998,943.22-1,378,544.34-636,289.48

Finding the Fourth Proportional to 998,943.22, 1,378,544.34 and 636,289.48

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Solution

The fourth proportional to 998,943.22, 1,378,544.34 and 636,289.48 is: 878,081.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,943.22 : 1,378,544.34 = 636,289.48 : x
  2. Step 2: Convert to fraction form
    998,943.22/1,378,544.34 = 636,289.48/x
  3. Step 3: Cross multiply
    998,943.22x = 1,378,544.34 × 636,289.48
  4. Step 4: Simplify right side
    998,943.22x = 877,153,261,255.54
  5. Step 5: Solve for x
    x = 877,153,261,255.54/998,943.22
  6. Step 6: Final answer
    x = 878,081.20

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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.