Home / 7,135,915.20-10,689,357.60-4,431,940.80

Finding the Fourth Proportional to 7,135,915.20, 10,689,357.60 and 4,431,940.80

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Solution

The fourth proportional to 7,135,915.20, 10,689,357.60 and 4,431,940.80 is: 6,638,896.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,135,915.20 : 10,689,357.60 = 4,431,940.80 : x
  2. Step 2: Convert to fraction form
    7,135,915.20/10,689,357.60 = 4,431,940.80/x
  3. Step 3: Cross multiply
    7,135,915.20x = 10,689,357.60 × 4,431,940.80
  4. Step 4: Simplify right side
    7,135,915.20x = 47,374,600,073,230.08
  5. Step 5: Solve for x
    x = 47,374,600,073,230.08/7,135,915.20
  6. Step 6: Final answer
    x = 6,638,896.17

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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.