Home / 1,299,148.20-1,948,722.30-820,851.30

Finding the Fourth Proportional to 1,299,148.20, 1,948,722.30 and 820,851.30

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Solution

The fourth proportional to 1,299,148.20, 1,948,722.30 and 820,851.30 is: 1,231,276.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299,148.20 : 1,948,722.30 = 820,851.30 : x
  2. Step 2: Convert to fraction form
    1,299,148.20/1,948,722.30 = 820,851.30/x
  3. Step 3: Cross multiply
    1,299,148.20x = 1,948,722.30 × 820,851.30
  4. Step 4: Simplify right side
    1,299,148.20x = 1,599,611,233,293.99
  5. Step 5: Solve for x
    x = 1,599,611,233,293.99/1,299,148.20
  6. Step 6: Final answer
    x = 1,231,276.95

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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.