Home / 2,116,221.85-2,921,277.91-1,428,823.83

Finding the Fourth Proportional to 2,116,221.85, 2,921,277.91 and 1,428,823.83

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Solution

The fourth proportional to 2,116,221.85, 2,921,277.91 and 1,428,823.83 is: 1,972,378.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116,221.85 : 2,921,277.91 = 1,428,823.83 : x
  2. Step 2: Convert to fraction form
    2,116,221.85/2,921,277.91 = 1,428,823.83/x
  3. Step 3: Cross multiply
    2,116,221.85x = 2,921,277.91 × 1,428,823.83
  4. Step 4: Simplify right side
    2,116,221.85x = 4,173,991,491,860.60
  5. Step 5: Solve for x
    x = 4,173,991,491,860.60/2,116,221.85
  6. Step 6: Final answer
    x = 1,972,378.98

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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.