Home / 803,464.20-1,205,196.30-329,905.80

Finding the Fourth Proportional to 803,464.20, 1,205,196.30 and 329,905.80

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Solution

The fourth proportional to 803,464.20, 1,205,196.30 and 329,905.80 is: 494,858.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    803,464.20 : 1,205,196.30 = 329,905.80 : x
  2. Step 2: Convert to fraction form
    803,464.20/1,205,196.30 = 329,905.80/x
  3. Step 3: Cross multiply
    803,464.20x = 1,205,196.30 × 329,905.80
  4. Step 4: Simplify right side
    803,464.20x = 397,601,249,508.54
  5. Step 5: Solve for x
    x = 397,601,249,508.54/803,464.20
  6. Step 6: Final answer
    x = 494,858.70

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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.