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Finding the Fourth Proportional to 7,155,791.22, 9,874,984.41 and 3,892,598.16

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Solution

The fourth proportional to 7,155,791.22, 9,874,984.41 and 3,892,598.16 is: 5,371,781.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,155,791.22 : 9,874,984.41 = 3,892,598.16 : x
  2. Step 2: Convert to fraction form
    7,155,791.22/9,874,984.41 = 3,892,598.16/x
  3. Step 3: Cross multiply
    7,155,791.22x = 9,874,984.41 × 3,892,598.16
  4. Step 4: Simplify right side
    7,155,791.22x = 38,439,346,144,394.69
  5. Step 5: Solve for x
    x = 38,439,346,144,394.69/7,155,791.22
  6. Step 6: Final answer
    x = 5,371,781.40

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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.