Home / 1,274,824.20-1,912,466.70-642,145.80

Finding the Fourth Proportional to 1,274,824.20, 1,912,466.70 and 642,145.80

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Solution

The fourth proportional to 1,274,824.20, 1,912,466.70 and 642,145.80 is: 963,334.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,274,824.20 : 1,912,466.70 = 642,145.80 : x
  2. Step 2: Convert to fraction form
    1,274,824.20/1,912,466.70 = 642,145.80/x
  3. Step 3: Cross multiply
    1,274,824.20x = 1,912,466.70 × 642,145.80
  4. Step 4: Simplify right side
    1,274,824.20x = 1,228,082,459,044.86
  5. Step 5: Solve for x
    x = 1,228,082,459,044.86/1,274,824.20
  6. Step 6: Final answer
    x = 963,334.76

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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.