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Finding the Fourth Proportional to 1,721,809.80, 2,581,793.10 and 723,409.80

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Solution

The fourth proportional to 1,721,809.80, 2,581,793.10 and 723,409.80 is: 1,084,727.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721,809.80 : 2,581,793.10 = 723,409.80 : x
  2. Step 2: Convert to fraction form
    1,721,809.80/2,581,793.10 = 723,409.80/x
  3. Step 3: Cross multiply
    1,721,809.80x = 2,581,793.10 × 723,409.80
  4. Step 4: Simplify right side
    1,721,809.80x = 1,867,694,430,112.38
  5. Step 5: Solve for x
    x = 1,867,694,430,112.38/1,721,809.80
  6. Step 6: Final answer
    x = 1,084,727.49

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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.