Home / 1,288,365.78-1,778,205.78-744,524.40

Finding the Fourth Proportional to 1,288,365.78, 1,778,205.78 and 744,524.40

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Solution

The fourth proportional to 1,288,365.78, 1,778,205.78 and 744,524.40 is: 1,027,594.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,365.78 : 1,778,205.78 = 744,524.40 : x
  2. Step 2: Convert to fraction form
    1,288,365.78/1,778,205.78 = 744,524.40/x
  3. Step 3: Cross multiply
    1,288,365.78x = 1,778,205.78 × 744,524.40
  4. Step 4: Simplify right side
    1,288,365.78x = 1,323,917,591,431.03
  5. Step 5: Solve for x
    x = 1,323,917,591,431.03/1,288,365.78
  6. Step 6: Final answer
    x = 1,027,594.50

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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.