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Finding the Fourth Proportional to 1,761,945.40, 2,648,447.70 and 1,728,767.80

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Solution

The fourth proportional to 1,761,945.40, 2,648,447.70 and 1,728,767.80 is: 2,598,577.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,761,945.40 : 2,648,447.70 = 1,728,767.80 : x
  2. Step 2: Convert to fraction form
    1,761,945.40/2,648,447.70 = 1,728,767.80/x
  3. Step 3: Cross multiply
    1,761,945.40x = 2,648,447.70 × 1,728,767.80
  4. Step 4: Simplify right side
    1,761,945.40x = 4,578,551,103,744.06
  5. Step 5: Solve for x
    x = 4,578,551,103,744.06/1,761,945.40
  6. Step 6: Final answer
    x = 2,598,577.18

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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.