Home / 856,916.64-1,285,554.78-257,921.64

Finding the Fourth Proportional to 856,916.64, 1,285,554.78 and 257,921.64

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Solution

The fourth proportional to 856,916.64, 1,285,554.78 and 257,921.64 is: 386,936.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,916.64 : 1,285,554.78 = 257,921.64 : x
  2. Step 2: Convert to fraction form
    856,916.64/1,285,554.78 = 257,921.64/x
  3. Step 3: Cross multiply
    856,916.64x = 1,285,554.78 × 257,921.64
  4. Step 4: Simplify right side
    856,916.64x = 331,572,397,167.44
  5. Step 5: Solve for x
    x = 331,572,397,167.44/856,916.64
  6. Step 6: Final answer
    x = 386,936.58

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1.5x scale

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.