Home / 1,678,222.80-2,317,092.48-1,290,355.92

Finding the Fourth Proportional to 1,678,222.80, 2,317,092.48 and 1,290,355.92

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Solution

The fourth proportional to 1,678,222.80, 2,317,092.48 and 1,290,355.92 is: 1,781,571.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,678,222.80 : 2,317,092.48 = 1,290,355.92 : x
  2. Step 2: Convert to fraction form
    1,678,222.80/2,317,092.48 = 1,290,355.92/x
  3. Step 3: Cross multiply
    1,678,222.80x = 2,317,092.48 × 1,290,355.92
  4. Step 4: Simplify right side
    1,678,222.80x = 2,989,873,998,755.48
  5. Step 5: Solve for x
    x = 2,989,873,998,755.48/1,678,222.80
  6. Step 6: Final answer
    x = 1,781,571.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.