Home / 1,855,620.49-2,778,705.60-1,222,615.21

Finding the Fourth Proportional to 1,855,620.49, 2,778,705.60 and 1,222,615.21

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Solution

The fourth proportional to 1,855,620.49, 2,778,705.60 and 1,222,615.21 is: 1,830,809.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,855,620.49 : 2,778,705.60 = 1,222,615.21 : x
  2. Step 2: Convert to fraction form
    1,855,620.49/2,778,705.60 = 1,222,615.21/x
  3. Step 3: Cross multiply
    1,855,620.49x = 2,778,705.60 × 1,222,615.21
  4. Step 4: Simplify right side
    1,855,620.49x = 3,397,287,730,672.18
  5. Step 5: Solve for x
    x = 3,397,287,730,672.18/1,855,620.49
  6. Step 6: Final answer
    x = 1,830,809.56

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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.