Home / 1,335,768.80-1,998,627.96-821,645.60

Finding the Fourth Proportional to 1,335,768.80, 1,998,627.96 and 821,645.60

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Solution

The fourth proportional to 1,335,768.80, 1,998,627.96 and 821,645.60 is: 1,229,377.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335,768.80 : 1,998,627.96 = 821,645.60 : x
  2. Step 2: Convert to fraction form
    1,335,768.80/1,998,627.96 = 821,645.60/x
  3. Step 3: Cross multiply
    1,335,768.80x = 1,998,627.96 × 821,645.60
  4. Step 4: Simplify right side
    1,335,768.80x = 1,642,163,869,370.98
  5. Step 5: Solve for x
    x = 1,642,163,869,370.98/1,335,768.80
  6. Step 6: Final answer
    x = 1,229,377.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.