Home / 1,115,929.20-1,540,723.44-857,345.28

Finding the Fourth Proportional to 1,115,929.20, 1,540,723.44 and 857,345.28

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Solution

The fourth proportional to 1,115,929.20, 1,540,723.44 and 857,345.28 is: 1,183,705.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,929.20 : 1,540,723.44 = 857,345.28 : x
  2. Step 2: Convert to fraction form
    1,115,929.20/1,540,723.44 = 857,345.28/x
  3. Step 3: Cross multiply
    1,115,929.20x = 1,540,723.44 × 857,345.28
  4. Step 4: Simplify right side
    1,115,929.20x = 1,320,931,969,069.36
  5. Step 5: Solve for x
    x = 1,320,931,969,069.36/1,115,929.20
  6. Step 6: Final answer
    x = 1,183,705.89

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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.