Home / 7,172,380.95-9,897,893.31-3,909,198.34

Finding the Fourth Proportional to 7,172,380.95, 9,897,893.31 and 3,909,198.34

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Solution

The fourth proportional to 7,172,380.95, 9,897,893.31 and 3,909,198.34 is: 5,394,697.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,172,380.95 : 9,897,893.31 = 3,909,198.34 : x
  2. Step 2: Convert to fraction form
    7,172,380.95/9,897,893.31 = 3,909,198.34/x
  3. Step 3: Cross multiply
    7,172,380.95x = 9,897,893.31 × 3,909,198.34
  4. Step 4: Simplify right side
    7,172,380.95x = 38,692,828,096,949.11
  5. Step 5: Solve for x
    x = 38,692,828,096,949.11/7,172,380.95
  6. Step 6: Final answer
    x = 5,394,697.85

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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.