Home / 1,115,742.87-1,540,466.64-857,159.28

Finding the Fourth Proportional to 1,115,742.87, 1,540,466.64 and 857,159.28

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Solution

The fourth proportional to 1,115,742.87, 1,540,466.64 and 857,159.28 is: 1,183,449.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,742.87 : 1,540,466.64 = 857,159.28 : x
  2. Step 2: Convert to fraction form
    1,115,742.87/1,540,466.64 = 857,159.28/x
  3. Step 3: Cross multiply
    1,115,742.87x = 1,540,466.64 × 857,159.28
  4. Step 4: Simplify right side
    1,115,742.87x = 1,320,425,276,006.42
  5. Step 5: Solve for x
    x = 1,320,425,276,006.42/1,115,742.87
  6. Step 6: Final answer
    x = 1,183,449.44

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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.