Home / 686,548.88-1,029,823.52-213,234.29

Finding the Fourth Proportional to 686,548.88, 1,029,823.52 and 213,234.29

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Solution

The fourth proportional to 686,548.88, 1,029,823.52 and 213,234.29 is: 319,851.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,548.88 : 1,029,823.52 = 213,234.29 : x
  2. Step 2: Convert to fraction form
    686,548.88/1,029,823.52 = 213,234.29/x
  3. Step 3: Cross multiply
    686,548.88x = 1,029,823.52 × 213,234.29
  4. Step 4: Simplify right side
    686,548.88x = 219,593,680,897.21
  5. Step 5: Solve for x
    x = 219,593,680,897.21/686,548.88
  6. Step 6: Final answer
    x = 319,851.49

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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.