Home / 10,791,645.60-16,187,468.40-7,780,146.60

Finding the Fourth Proportional to 10,791,645.60, 16,187,468.40 and 7,780,146.60

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Solution

The fourth proportional to 10,791,645.60, 16,187,468.40 and 7,780,146.60 is: 11,670,219.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,791,645.60 : 16,187,468.40 = 7,780,146.60 : x
  2. Step 2: Convert to fraction form
    10,791,645.60/16,187,468.40 = 7,780,146.60/x
  3. Step 3: Cross multiply
    10,791,645.60x = 16,187,468.40 × 7,780,146.60
  4. Step 4: Simplify right side
    10,791,645.60x = 125,940,877,234,867.44
  5. Step 5: Solve for x
    x = 125,940,877,234,867.44/10,791,645.60
  6. Step 6: Final answer
    x = 11,670,219.90

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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.