Home / 856,687.39-1,284,698.86-457,110.16

Finding the Fourth Proportional to 856,687.39, 1,284,698.86 and 457,110.16

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Solution

The fourth proportional to 856,687.39, 1,284,698.86 and 457,110.16 is: 685,487.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,687.39 : 1,284,698.86 = 457,110.16 : x
  2. Step 2: Convert to fraction form
    856,687.39/1,284,698.86 = 457,110.16/x
  3. Step 3: Cross multiply
    856,687.39x = 1,284,698.86 × 457,110.16
  4. Step 4: Simplify right side
    856,687.39x = 587,248,901,446.42
  5. Step 5: Solve for x
    x = 587,248,901,446.42/856,687.39
  6. Step 6: Final answer
    x = 685,487.97

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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.