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Finding the Fourth Proportional to 1,662,724.80, 2,494,821.60 and 809,323.20

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Solution

The fourth proportional to 1,662,724.80, 2,494,821.60 and 809,323.20 is: 1,214,342.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,662,724.80 : 2,494,821.60 = 809,323.20 : x
  2. Step 2: Convert to fraction form
    1,662,724.80/2,494,821.60 = 809,323.20/x
  3. Step 3: Cross multiply
    1,662,724.80x = 2,494,821.60 × 809,323.20
  4. Step 4: Simplify right side
    1,662,724.80x = 2,019,117,000,741.12
  5. Step 5: Solve for x
    x = 2,019,117,000,741.12/1,662,724.80
  6. Step 6: Final answer
    x = 1,214,342.27

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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.