Home / 7,890,307.20-11,831,961.60-3,631,780.80

Finding the Fourth Proportional to 7,890,307.20, 11,831,961.60 and 3,631,780.80

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Solution

The fourth proportional to 7,890,307.20, 11,831,961.60 and 3,631,780.80 is: 5,446,060.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890,307.20 : 11,831,961.60 = 3,631,780.80 : x
  2. Step 2: Convert to fraction form
    7,890,307.20/11,831,961.60 = 3,631,780.80/x
  3. Step 3: Cross multiply
    7,890,307.20x = 11,831,961.60 × 3,631,780.80
  4. Step 4: Simplify right side
    7,890,307.20x = 42,971,090,965,217.27
  5. Step 5: Solve for x
    x = 42,971,090,965,217.27/7,890,307.20
  6. Step 6: Final answer
    x = 5,446,060.57

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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.