Home / 7,178,998.88-9,907,049.48-3,915,883.76

Finding the Fourth Proportional to 7,178,998.88, 9,907,049.48 and 3,915,883.76

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Solution

The fourth proportional to 7,178,998.88, 9,907,049.48 and 3,915,883.76 is: 5,403,936.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,178,998.88 : 9,907,049.48 = 3,915,883.76 : x
  2. Step 2: Convert to fraction form
    7,178,998.88/9,907,049.48 = 3,915,883.76/x
  3. Step 3: Cross multiply
    7,178,998.88x = 9,907,049.48 × 3,915,883.76
  4. Step 4: Simplify right side
    7,178,998.88x = 38,794,854,168,248.45
  5. Step 5: Solve for x
    x = 38,794,854,168,248.45/7,178,998.88
  6. Step 6: Final answer
    x = 5,403,936.51

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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.