Home / 856,874.10-1,285,052.07-257,676.21

Finding the Fourth Proportional to 856,874.10, 1,285,052.07 and 257,676.21

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Solution

The fourth proportional to 856,874.10, 1,285,052.07 and 257,676.21 is: 386,436.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,874.10 : 1,285,052.07 = 257,676.21 : x
  2. Step 2: Convert to fraction form
    856,874.10/1,285,052.07 = 257,676.21/x
  3. Step 3: Cross multiply
    856,874.10x = 1,285,052.07 × 257,676.21
  4. Step 4: Simplify right side
    856,874.10x = 331,127,347,050.26
  5. Step 5: Solve for x
    x = 331,127,347,050.26/856,874.10
  6. Step 6: Final answer
    x = 386,436.41

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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.