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Finding the Fourth Proportional to 6,489,978.87, 8,958,928.51 and 4,043,798.51

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Solution

The fourth proportional to 6,489,978.87, 8,958,928.51 and 4,043,798.51 is: 5,582,160.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,489,978.87 : 8,958,928.51 = 4,043,798.51 : x
  2. Step 2: Convert to fraction form
    6,489,978.87/8,958,928.51 = 4,043,798.51/x
  3. Step 3: Cross multiply
    6,489,978.87x = 8,958,928.51 × 4,043,798.51
  4. Step 4: Simplify right side
    6,489,978.87x = 36,228,101,773,039.22
  5. Step 5: Solve for x
    x = 36,228,101,773,039.22/6,489,978.87
  6. Step 6: Final answer
    x = 5,582,160.20

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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.