Home / 857,348.40-1,286,022.96-317,790.24

Finding the Fourth Proportional to 857,348.40, 1,286,022.96 and 317,790.24

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Solution

The fourth proportional to 857,348.40, 1,286,022.96 and 317,790.24 is: 476,685.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,348.40 : 1,286,022.96 = 317,790.24 : x
  2. Step 2: Convert to fraction form
    857,348.40/1,286,022.96 = 317,790.24/x
  3. Step 3: Cross multiply
    857,348.40x = 1,286,022.96 × 317,790.24
  4. Step 4: Simplify right side
    857,348.40x = 408,685,545,103.91
  5. Step 5: Solve for x
    x = 408,685,545,103.91/857,348.40
  6. Step 6: Final answer
    x = 476,685.49

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Half scale
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Double scale
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Similar ratio
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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.