Home / 886,837.90-1,330,256.85-512,668.30

Finding the Fourth Proportional to 886,837.90, 1,330,256.85 and 512,668.30

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Solution

The fourth proportional to 886,837.90, 1,330,256.85 and 512,668.30 is: 769,002.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,837.90 : 1,330,256.85 = 512,668.30 : x
  2. Step 2: Convert to fraction form
    886,837.90/1,330,256.85 = 512,668.30/x
  3. Step 3: Cross multiply
    886,837.90x = 1,330,256.85 × 512,668.30
  4. Step 4: Simplify right side
    886,837.90x = 681,980,517,852.86
  5. Step 5: Solve for x
    x = 681,980,517,852.86/886,837.90
  6. Step 6: Final answer
    x = 769,002.45

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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.