Home / 1,998,005.20-2,997,007.80-800,112.40

Finding the Fourth Proportional to 1,998,005.20, 2,997,007.80 and 800,112.40

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Solution

The fourth proportional to 1,998,005.20, 2,997,007.80 and 800,112.40 is: 1,200,168.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998,005.20 : 2,997,007.80 = 800,112.40 : x
  2. Step 2: Convert to fraction form
    1,998,005.20/2,997,007.80 = 800,112.40/x
  3. Step 3: Cross multiply
    1,998,005.20x = 2,997,007.80 × 800,112.40
  4. Step 4: Simplify right side
    1,998,005.20x = 2,397,943,103,676.72
  5. Step 5: Solve for x
    x = 2,397,943,103,676.72/1,998,005.20
  6. Step 6: Final answer
    x = 1,200,168.60

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1.5x scale

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.