Home / 886,603.40-1,329,905.10-512,433.80

Finding the Fourth Proportional to 886,603.40, 1,329,905.10 and 512,433.80

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Solution

The fourth proportional to 886,603.40, 1,329,905.10 and 512,433.80 is: 768,650.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,603.40 : 1,329,905.10 = 512,433.80 : x
  2. Step 2: Convert to fraction form
    886,603.40/1,329,905.10 = 512,433.80/x
  3. Step 3: Cross multiply
    886,603.40x = 1,329,905.10 × 512,433.80
  4. Step 4: Simplify right side
    886,603.40x = 681,488,324,032.38
  5. Step 5: Solve for x
    x = 681,488,324,032.38/886,603.40
  6. Step 6: Final answer
    x = 768,650.70

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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.