Home / 3,005,145-4,146,891.31-1,781,387.28

Finding the Fourth Proportional to 3,005,145, 4,146,891.31 and 1,781,387.28

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Solution

The fourth proportional to 3,005,145, 4,146,891.31 and 1,781,387.28 is: 2,458,190.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,005,145 : 4,146,891.31 = 1,781,387.28 : x
  2. Step 2: Convert to fraction form
    3,005,145/4,146,891.31 = 1,781,387.28/x
  3. Step 3: Cross multiply
    3,005,145x = 4,146,891.31 × 1,781,387.28
  4. Step 4: Simplify right side
    3,005,145x = 7,387,219,431,176.54
  5. Step 5: Solve for x
    x = 7,387,219,431,176.54/3,005,145
  6. Step 6: Final answer
    x = 2,458,190.68

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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.