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Finding the Fourth Proportional to 1,964,660.40, 2,946,407.40 and 765,892.80

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Solution

The fourth proportional to 1,964,660.40, 2,946,407.40 and 765,892.80 is: 1,148,611.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,964,660.40 : 2,946,407.40 = 765,892.80 : x
  2. Step 2: Convert to fraction form
    1,964,660.40/2,946,407.40 = 765,892.80/x
  3. Step 3: Cross multiply
    1,964,660.40x = 2,946,407.40 × 765,892.80
  4. Step 4: Simplify right side
    1,964,660.40x = 2,256,632,213,526.72
  5. Step 5: Solve for x
    x = 2,256,632,213,526.72/1,964,660.40
  6. Step 6: Final answer
    x = 1,148,611.85

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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.