Home / 1,335,942.40-2,003,913.60-1,288,703.20

Finding the Fourth Proportional to 1,335,942.40, 2,003,913.60 and 1,288,703.20

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Solution

The fourth proportional to 1,335,942.40, 2,003,913.60 and 1,288,703.20 is: 1,933,054.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335,942.40 : 2,003,913.60 = 1,288,703.20 : x
  2. Step 2: Convert to fraction form
    1,335,942.40/2,003,913.60 = 1,288,703.20/x
  3. Step 3: Cross multiply
    1,335,942.40x = 2,003,913.60 × 1,288,703.20
  4. Step 4: Simplify right side
    1,335,942.40x = 2,582,449,868,843.52
  5. Step 5: Solve for x
    x = 2,582,449,868,843.52/1,335,942.40
  6. Step 6: Final answer
    x = 1,933,054.80

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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.