Home / 856,854.10-1,285,022.08-257,656.20

Finding the Fourth Proportional to 856,854.10, 1,285,022.08 and 257,656.20

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Solution

The fourth proportional to 856,854.10, 1,285,022.08 and 257,656.20 is: 386,406.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,854.10 : 1,285,022.08 = 257,656.20 : x
  2. Step 2: Convert to fraction form
    856,854.10/1,285,022.08 = 257,656.20/x
  3. Step 3: Cross multiply
    856,854.10x = 1,285,022.08 × 257,656.20
  4. Step 4: Simplify right side
    856,854.10x = 331,093,906,048.90
  5. Step 5: Solve for x
    x = 331,093,906,048.90/856,854.10
  6. Step 6: Final answer
    x = 386,406.40

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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.