Home / 1,210,915.89-1,671,195.20-667,107.41

Finding the Fourth Proportional to 1,210,915.89, 1,671,195.20 and 667,107.41

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Solution

The fourth proportional to 1,210,915.89, 1,671,195.20 and 667,107.41 is: 920,680.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,915.89 : 1,671,195.20 = 667,107.41 : x
  2. Step 2: Convert to fraction form
    1,210,915.89/1,671,195.20 = 667,107.41/x
  3. Step 3: Cross multiply
    1,210,915.89x = 1,671,195.20 × 667,107.41
  4. Step 4: Simplify right side
    1,210,915.89x = 1,114,866,689,784.92
  5. Step 5: Solve for x
    x = 1,114,866,689,784.92/1,210,915.89
  6. Step 6: Final answer
    x = 920,680.54

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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.