Home / 8,619,967.20-12,921,656.40-6,699,813.60

Finding the Fourth Proportional to 8,619,967.20, 12,921,656.40 and 6,699,813.60

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Solution

The fourth proportional to 8,619,967.20, 12,921,656.40 and 6,699,813.60 is: 10,043,273.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619,967.20 : 12,921,656.40 = 6,699,813.60 : x
  2. Step 2: Convert to fraction form
    8,619,967.20/12,921,656.40 = 6,699,813.60/x
  3. Step 3: Cross multiply
    8,619,967.20x = 12,921,656.40 × 6,699,813.60
  4. Step 4: Simplify right side
    8,619,967.20x = 86,572,689,283,247.03
  5. Step 5: Solve for x
    x = 86,572,689,283,247.03/8,619,967.20
  6. Step 6: Final answer
    x = 10,043,273.63

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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.