Home / 886,823.90-1,330,235.85-512,654.30

Finding the Fourth Proportional to 886,823.90, 1,330,235.85 and 512,654.30

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Solution

The fourth proportional to 886,823.90, 1,330,235.85 and 512,654.30 is: 768,981.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,823.90 : 1,330,235.85 = 512,654.30 : x
  2. Step 2: Convert to fraction form
    886,823.90/1,330,235.85 = 512,654.30/x
  3. Step 3: Cross multiply
    886,823.90x = 1,330,235.85 × 512,654.30
  4. Step 4: Simplify right side
    886,823.90x = 681,951,128,516.66
  5. Step 5: Solve for x
    x = 681,951,128,516.66/886,823.90
  6. Step 6: Final answer
    x = 768,981.45

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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.