Home / 885,704.40-1,328,556.60-512,456.40

Finding the Fourth Proportional to 885,704.40, 1,328,556.60 and 512,456.40

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Solution

The fourth proportional to 885,704.40, 1,328,556.60 and 512,456.40 is: 768,684.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,704.40 : 1,328,556.60 = 512,456.40 : x
  2. Step 2: Convert to fraction form
    885,704.40/1,328,556.60 = 512,456.40/x
  3. Step 3: Cross multiply
    885,704.40x = 1,328,556.60 × 512,456.40
  4. Step 4: Simplify right side
    885,704.40x = 680,827,332,432.24
  5. Step 5: Solve for x
    x = 680,827,332,432.24/885,704.40
  6. Step 6: Final answer
    x = 768,684.60

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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.