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Finding the Fourth Proportional to 1,761,946.40, 2,648,449.20 and 1,728,768.80

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Solution

The fourth proportional to 1,761,946.40, 2,648,449.20 and 1,728,768.80 is: 2,598,578.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,761,946.40 : 2,648,449.20 = 1,728,768.80 : x
  2. Step 2: Convert to fraction form
    1,761,946.40/2,648,449.20 = 1,728,768.80/x
  3. Step 3: Cross multiply
    1,761,946.40x = 2,648,449.20 × 1,728,768.80
  4. Step 4: Simplify right side
    1,761,946.40x = 4,578,556,345,344.96
  5. Step 5: Solve for x
    x = 4,578,556,345,344.96/1,761,946.40
  6. Step 6: Final answer
    x = 2,598,578.68

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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.