Home / 1,280,836.30-1,921,221.35-416,266.38

Finding the Fourth Proportional to 1,280,836.30, 1,921,221.35 and 416,266.38

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Solution

The fourth proportional to 1,280,836.30, 1,921,221.35 and 416,266.38 is: 624,388.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,836.30 : 1,921,221.35 = 416,266.38 : x
  2. Step 2: Convert to fraction form
    1,280,836.30/1,921,221.35 = 416,266.38/x
  3. Step 3: Cross multiply
    1,280,836.30x = 1,921,221.35 × 416,266.38
  4. Step 4: Simplify right side
    1,280,836.30x = 799,739,846,937.11
  5. Step 5: Solve for x
    x = 799,739,846,937.11/1,280,836.30
  6. Step 6: Final answer
    x = 624,388.81

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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.