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Finding the Fourth Proportional to 6,355,978.88, 9,538,167.35 and 2,990,448.32

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Solution

The fourth proportional to 6,355,978.88, 9,538,167.35 and 2,990,448.32 is: 4,487,648.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,355,978.88 : 9,538,167.35 = 2,990,448.32 : x
  2. Step 2: Convert to fraction form
    6,355,978.88/9,538,167.35 = 2,990,448.32/x
  3. Step 3: Cross multiply
    6,355,978.88x = 9,538,167.35 × 2,990,448.32
  4. Step 4: Simplify right side
    6,355,978.88x = 28,523,396,487,471.63
  5. Step 5: Solve for x
    x = 28,523,396,487,471.63/6,355,978.88
  6. Step 6: Final answer
    x = 4,487,648.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.