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Finding the Fourth Proportional to 8,695,998.40, 13,043,997.60 and 7,739,404.60

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Solution

The fourth proportional to 8,695,998.40, 13,043,997.60 and 7,739,404.60 is: 11,609,106.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,695,998.40 : 13,043,997.60 = 7,739,404.60 : x
  2. Step 2: Convert to fraction form
    8,695,998.40/13,043,997.60 = 7,739,404.60/x
  3. Step 3: Cross multiply
    8,695,998.40x = 13,043,997.60 × 7,739,404.60
  4. Step 4: Simplify right side
    8,695,998.40x = 100,952,775,027,828.95
  5. Step 5: Solve for x
    x = 100,952,775,027,828.95/8,695,998.40
  6. Step 6: Final answer
    x = 11,609,106.90

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Similar ratio
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1.5x scale

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.