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Finding the Fourth Proportional to 10,371,985.60, 15,557,978.40 and 5,589,016.60

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Solution

The fourth proportional to 10,371,985.60, 15,557,978.40 and 5,589,016.60 is: 8,383,524.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,371,985.60 : 15,557,978.40 = 5,589,016.60 : x
  2. Step 2: Convert to fraction form
    10,371,985.60/15,557,978.40 = 5,589,016.60/x
  3. Step 3: Cross multiply
    10,371,985.60x = 15,557,978.40 × 5,589,016.60
  4. Step 4: Simplify right side
    10,371,985.60x = 86,953,799,540,041.44
  5. Step 5: Solve for x
    x = 86,953,799,540,041.44/10,371,985.60
  6. Step 6: Final answer
    x = 8,383,524.90

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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.