Home / 7,768,578.28-10,720,431.12-4,505,188.72

Finding the Fourth Proportional to 7,768,578.28, 10,720,431.12 and 4,505,188.72

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Solution

The fourth proportional to 7,768,578.28, 10,720,431.12 and 4,505,188.72 is: 6,217,040.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,768,578.28 : 10,720,431.12 = 4,505,188.72 : x
  2. Step 2: Convert to fraction form
    7,768,578.28/10,720,431.12 = 4,505,188.72/x
  3. Step 3: Cross multiply
    7,768,578.28x = 10,720,431.12 × 4,505,188.72
  4. Step 4: Simplify right side
    7,768,578.28x = 48,297,565,355,360.96
  5. Step 5: Solve for x
    x = 48,297,565,355,360.96/7,768,578.28
  6. Step 6: Final answer
    x = 6,217,040.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.