Home / 856,700.38-1,285,114.29-257,613.58

Finding the Fourth Proportional to 856,700.38, 1,285,114.29 and 257,613.58

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Solution

The fourth proportional to 856,700.38, 1,285,114.29 and 257,613.58 is: 386,439.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,700.38 : 1,285,114.29 = 257,613.58 : x
  2. Step 2: Convert to fraction form
    856,700.38/1,285,114.29 = 257,613.58/x
  3. Step 3: Cross multiply
    856,700.38x = 1,285,114.29 × 257,613.58
  4. Step 4: Simplify right side
    856,700.38x = 331,062,892,956.06
  5. Step 5: Solve for x
    x = 331,062,892,956.06/856,700.38
  6. Step 6: Final answer
    x = 386,439.53

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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.