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Finding the Fourth Proportional to 8,463,459.60, 12,695,189.40 and 7,188,001.20

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Solution

The fourth proportional to 8,463,459.60, 12,695,189.40 and 7,188,001.20 is: 10,782,001.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,463,459.60 : 12,695,189.40 = 7,188,001.20 : x
  2. Step 2: Convert to fraction form
    8,463,459.60/12,695,189.40 = 7,188,001.20/x
  3. Step 3: Cross multiply
    8,463,459.60x = 12,695,189.40 × 7,188,001.20
  4. Step 4: Simplify right side
    8,463,459.60x = 91,253,036,641,427.28
  5. Step 5: Solve for x
    x = 91,253,036,641,427.28/8,463,459.60
  6. Step 6: Final answer
    x = 10,782,001.80

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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.