Home / 911,968.14-1,368,099.21-280,881.66

Finding the Fourth Proportional to 911,968.14, 1,368,099.21 and 280,881.66

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Solution

The fourth proportional to 911,968.14, 1,368,099.21 and 280,881.66 is: 421,367.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,968.14 : 1,368,099.21 = 280,881.66 : x
  2. Step 2: Convert to fraction form
    911,968.14/1,368,099.21 = 280,881.66/x
  3. Step 3: Cross multiply
    911,968.14x = 1,368,099.21 × 280,881.66
  4. Step 4: Simplify right side
    911,968.14x = 384,273,977,149.49
  5. Step 5: Solve for x
    x = 384,273,977,149.49/911,968.14
  6. Step 6: Final answer
    x = 421,367.77

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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.