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Finding the Fourth Proportional to 3,819,477.11, 5,270,978.14 and 2,100,642.73

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Solution

The fourth proportional to 3,819,477.11, 5,270,978.14 and 2,100,642.73 is: 2,898,941.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,819,477.11 : 5,270,978.14 = 2,100,642.73 : x
  2. Step 2: Convert to fraction form
    3,819,477.11/5,270,978.14 = 2,100,642.73/x
  3. Step 3: Cross multiply
    3,819,477.11x = 5,270,978.14 × 2,100,642.73
  4. Step 4: Simplify right side
    3,819,477.11x = 11,072,441,911,117.04
  5. Step 5: Solve for x
    x = 11,072,441,911,117.04/3,819,477.11
  6. Step 6: Final answer
    x = 2,898,941.82

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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.