Home / 998,720.70-1,378,240.80-539,834.34

Finding the Fourth Proportional to 998,720.70, 1,378,240.80 and 539,834.34

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Solution

The fourth proportional to 998,720.70, 1,378,240.80 and 539,834.34 is: 744,974.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,720.70 : 1,378,240.80 = 539,834.34 : x
  2. Step 2: Convert to fraction form
    998,720.70/1,378,240.80 = 539,834.34/x
  3. Step 3: Cross multiply
    998,720.70x = 1,378,240.80 × 539,834.34
  4. Step 4: Simplify right side
    998,720.70x = 744,021,712,629.07
  5. Step 5: Solve for x
    x = 744,021,712,629.07/998,720.70
  6. Step 6: Final answer
    x = 744,974.76

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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.