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Finding the Fourth Proportional to 7,998,978.13, 11,035,448.89 and 4,645,573.58

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Solution

The fourth proportional to 7,998,978.13, 11,035,448.89 and 4,645,573.58 is: 6,409,067.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,998,978.13 : 11,035,448.89 = 4,645,573.58 : x
  2. Step 2: Convert to fraction form
    7,998,978.13/11,035,448.89 = 4,645,573.58/x
  3. Step 3: Cross multiply
    7,998,978.13x = 11,035,448.89 × 4,645,573.58
  4. Step 4: Simplify right side
    7,998,978.13x = 51,265,989,760,828.45
  5. Step 5: Solve for x
    x = 51,265,989,760,828.45/7,998,978.13
  6. Step 6: Final answer
    x = 6,409,067.38

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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.