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Finding the Fourth Proportional to 1,946,800.60, 2,920,200.90 and 1,274,954.20

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Solution

The fourth proportional to 1,946,800.60, 2,920,200.90 and 1,274,954.20 is: 1,912,431.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,946,800.60 : 2,920,200.90 = 1,274,954.20 : x
  2. Step 2: Convert to fraction form
    1,946,800.60/2,920,200.90 = 1,274,954.20/x
  3. Step 3: Cross multiply
    1,946,800.60x = 2,920,200.90 × 1,274,954.20
  4. Step 4: Simplify right side
    1,946,800.60x = 3,723,122,402,298.78
  5. Step 5: Solve for x
    x = 3,723,122,402,298.78/1,946,800.60
  6. Step 6: Final answer
    x = 1,912,431.30

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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.