Home / 2,128,129.61-2,936,884.03-1,210,491.14

Finding the Fourth Proportional to 2,128,129.61, 2,936,884.03 and 1,210,491.14

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Solution

The fourth proportional to 2,128,129.61, 2,936,884.03 and 1,210,491.14 is: 1,670,514.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128,129.61 : 2,936,884.03 = 1,210,491.14 : x
  2. Step 2: Convert to fraction form
    2,128,129.61/2,936,884.03 = 1,210,491.14/x
  3. Step 3: Cross multiply
    2,128,129.61x = 2,936,884.03 × 1,210,491.14
  4. Step 4: Simplify right side
    2,128,129.61x = 3,555,072,079,811.85
  5. Step 5: Solve for x
    x = 3,555,072,079,811.85/2,128,129.61
  6. Step 6: Final answer
    x = 1,670,514.84

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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.