Home / 857,432.63-1,286,149.41-217,784.33

Finding the Fourth Proportional to 857,432.63, 1,286,149.41 and 217,784.33

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Solution

The fourth proportional to 857,432.63, 1,286,149.41 and 217,784.33 is: 326,676.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,432.63 : 1,286,149.41 = 217,784.33 : x
  2. Step 2: Convert to fraction form
    857,432.63/1,286,149.41 = 217,784.33/x
  3. Step 3: Cross multiply
    857,432.63x = 1,286,149.41 × 217,784.33
  4. Step 4: Simplify right side
    857,432.63x = 280,103,181,106.00
  5. Step 5: Solve for x
    x = 280,103,181,106.00/857,432.63
  6. Step 6: Final answer
    x = 326,676.61

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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.