Home / 828,000.60-1,242,000.90-379,228.20

Finding the Fourth Proportional to 828,000.60, 1,242,000.90 and 379,228.20

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Solution

The fourth proportional to 828,000.60, 1,242,000.90 and 379,228.20 is: 568,842.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,000.60 : 1,242,000.90 = 379,228.20 : x
  2. Step 2: Convert to fraction form
    828,000.60/1,242,000.90 = 379,228.20/x
  3. Step 3: Cross multiply
    828,000.60x = 1,242,000.90 × 379,228.20
  4. Step 4: Simplify right side
    828,000.60x = 471,001,765,705.38
  5. Step 5: Solve for x
    x = 471,001,765,705.38/828,000.60
  6. Step 6: Final answer
    x = 568,842.30

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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.