Home / 856,863.64-1,285,036.66-257,665.74

Finding the Fourth Proportional to 856,863.64, 1,285,036.66 and 257,665.74

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Solution

The fourth proportional to 856,863.64, 1,285,036.66 and 257,665.74 is: 386,420.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,863.64 : 1,285,036.66 = 257,665.74 : x
  2. Step 2: Convert to fraction form
    856,863.64/1,285,036.66 = 257,665.74/x
  3. Step 3: Cross multiply
    856,863.64x = 1,285,036.66 × 257,665.74
  4. Step 4: Simplify right side
    856,863.64x = 331,109,921,926.03
  5. Step 5: Solve for x
    x = 331,109,921,926.03/856,863.64
  6. Step 6: Final answer
    x = 386,420.79

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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.