Home / 686,595.70-1,029,893.55-213,277.30

Finding the Fourth Proportional to 686,595.70, 1,029,893.55 and 213,277.30

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Solution

The fourth proportional to 686,595.70, 1,029,893.55 and 213,277.30 is: 319,915.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,595.70 : 1,029,893.55 = 213,277.30 : x
  2. Step 2: Convert to fraction form
    686,595.70/1,029,893.55 = 213,277.30/x
  3. Step 3: Cross multiply
    686,595.70x = 1,029,893.55 × 213,277.30
  4. Step 4: Simplify right side
    686,595.70x = 219,652,915,631.42
  5. Step 5: Solve for x
    x = 219,652,915,631.42/686,595.70
  6. Step 6: Final answer
    x = 319,915.95

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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.