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Finding the Fourth Proportional to 7,115,900.92, 9,819,930.26 and 3,852,715.20

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Solution

The fourth proportional to 7,115,900.92, 9,819,930.26 and 3,852,715.20 is: 5,316,739.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,115,900.92 : 9,819,930.26 = 3,852,715.20 : x
  2. Step 2: Convert to fraction form
    7,115,900.92/9,819,930.26 = 3,852,715.20/x
  3. Step 3: Cross multiply
    7,115,900.92x = 9,819,930.26 × 3,852,715.20
  4. Step 4: Simplify right side
    7,115,900.92x = 37,833,394,575,641.95
  5. Step 5: Solve for x
    x = 37,833,394,575,641.95/7,115,900.92
  6. Step 6: Final answer
    x = 5,316,739.93

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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.