Home / 7,178,954.40-9,906,988.10-3,915,839.16

Finding the Fourth Proportional to 7,178,954.40, 9,906,988.10 and 3,915,839.16

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Solution

The fourth proportional to 7,178,954.40, 9,906,988.10 and 3,915,839.16 is: 5,403,874.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,178,954.40 : 9,906,988.10 = 3,915,839.16 : x
  2. Step 2: Convert to fraction form
    7,178,954.40/9,906,988.10 = 3,915,839.16/x
  3. Step 3: Cross multiply
    7,178,954.40x = 9,906,988.10 × 3,915,839.16
  4. Step 4: Simplify right side
    7,178,954.40x = 38,794,171,940,054.80
  5. Step 5: Solve for x
    x = 38,794,171,940,054.80/7,178,954.40
  6. Step 6: Final answer
    x = 5,403,874.96

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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.