Home / 1,274,819.20-1,912,228.80-742,940.80

Finding the Fourth Proportional to 1,274,819.20, 1,912,228.80 and 742,940.80

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Solution

The fourth proportional to 1,274,819.20, 1,912,228.80 and 742,940.80 is: 1,114,411.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,274,819.20 : 1,912,228.80 = 742,940.80 : x
  2. Step 2: Convert to fraction form
    1,274,819.20/1,912,228.80 = 742,940.80/x
  3. Step 3: Cross multiply
    1,274,819.20x = 1,912,228.80 × 742,940.80
  4. Step 4: Simplify right side
    1,274,819.20x = 1,420,672,794,455.04
  5. Step 5: Solve for x
    x = 1,420,672,794,455.04/1,274,819.20
  6. Step 6: Final answer
    x = 1,114,411.20

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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.