Home / 2,085,908.78-3,129,762.21-1,126,173.80

Finding the Fourth Proportional to 2,085,908.78, 3,129,762.21 and 1,126,173.80

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Solution

The fourth proportional to 2,085,908.78, 3,129,762.21 and 1,126,173.80 is: 1,689,746.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,085,908.78 : 3,129,762.21 = 1,126,173.80 : x
  2. Step 2: Convert to fraction form
    2,085,908.78/3,129,762.21 = 1,126,173.80/x
  3. Step 3: Cross multiply
    2,085,908.78x = 3,129,762.21 × 1,126,173.80
  4. Step 4: Simplify right side
    2,085,908.78x = 3,524,656,201,132.10
  5. Step 5: Solve for x
    x = 3,524,656,201,132.10/2,085,908.78
  6. Step 6: Final answer
    x = 1,689,746.09

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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.