Home / 998,657.81-1,378,231.76-611,471.33

Finding the Fourth Proportional to 998,657.81, 1,378,231.76 and 611,471.33

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Solution

The fourth proportional to 998,657.81, 1,378,231.76 and 611,471.33 is: 843,881.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,657.81 : 1,378,231.76 = 611,471.33 : x
  2. Step 2: Convert to fraction form
    998,657.81/1,378,231.76 = 611,471.33/x
  3. Step 3: Cross multiply
    998,657.81x = 1,378,231.76 × 611,471.33
  4. Step 4: Simplify right side
    998,657.81x = 842,749,203,701.80
  5. Step 5: Solve for x
    x = 842,749,203,701.80/998,657.81
  6. Step 6: Final answer
    x = 843,881.85

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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.