Home / 415,784.20-623,676.30-205,832.20

Finding the Fourth Proportional to 415,784.20, 623,676.30 and 205,832.20

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Solution

The fourth proportional to 415,784.20, 623,676.30 and 205,832.20 is: 308,748.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,784.20 : 623,676.30 = 205,832.20 : x
  2. Step 2: Convert to fraction form
    415,784.20/623,676.30 = 205,832.20/x
  3. Step 3: Cross multiply
    415,784.20x = 623,676.30 × 205,832.20
  4. Step 4: Simplify right side
    415,784.20x = 128,372,664,916.86
  5. Step 5: Solve for x
    x = 128,372,664,916.86/415,784.20
  6. Step 6: Final answer
    x = 308,748.30

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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.