Home / 7,217,203.05-9,959,657.21-3,909,434.15

Finding the Fourth Proportional to 7,217,203.05, 9,959,657.21 and 3,909,434.15

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Solution

The fourth proportional to 7,217,203.05, 9,959,657.21 and 3,909,434.15 is: 5,394,974.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,217,203.05 : 9,959,657.21 = 3,909,434.15 : x
  2. Step 2: Convert to fraction form
    7,217,203.05/9,959,657.21 = 3,909,434.15/x
  3. Step 3: Cross multiply
    7,217,203.05x = 9,959,657.21 × 3,909,434.15
  4. Step 4: Simplify right side
    7,217,203.05x = 38,936,623,969,269.44
  5. Step 5: Solve for x
    x = 38,936,623,969,269.44/7,217,203.05
  6. Step 6: Final answer
    x = 5,394,974.16

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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.