Home / 856,856.10-1,285,025.09-257,658.20

Finding the Fourth Proportional to 856,856.10, 1,285,025.09 and 257,658.20

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Solution

The fourth proportional to 856,856.10, 1,285,025.09 and 257,658.20 is: 386,409.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,856.10 : 1,285,025.09 = 257,658.20 : x
  2. Step 2: Convert to fraction form
    856,856.10/1,285,025.09 = 257,658.20/x
  3. Step 3: Cross multiply
    856,856.10x = 1,285,025.09 × 257,658.20
  4. Step 4: Simplify right side
    856,856.10x = 331,097,243,930.82
  5. Step 5: Solve for x
    x = 331,097,243,930.82/856,856.10
  6. Step 6: Final answer
    x = 386,409.39

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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.