Home / 2,128,415.68-2,937,278.46-1,210,777.78

Finding the Fourth Proportional to 2,128,415.68, 2,937,278.46 and 1,210,777.78

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Solution

The fourth proportional to 2,128,415.68, 2,937,278.46 and 1,210,777.78 is: 1,670,910.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128,415.68 : 2,937,278.46 = 1,210,777.78 : x
  2. Step 2: Convert to fraction form
    2,128,415.68/2,937,278.46 = 1,210,777.78/x
  3. Step 3: Cross multiply
    2,128,415.68x = 2,937,278.46 × 1,210,777.78
  4. Step 4: Simplify right side
    2,128,415.68x = 3,556,391,493,040.62
  5. Step 5: Solve for x
    x = 3,556,391,493,040.62/2,128,415.68
  6. Step 6: Final answer
    x = 1,670,910.21

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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.