Home / 782,801.20-1,174,201.80-408,775.60

Finding the Fourth Proportional to 782,801.20, 1,174,201.80 and 408,775.60

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Solution

The fourth proportional to 782,801.20, 1,174,201.80 and 408,775.60 is: 613,163.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,801.20 : 1,174,201.80 = 408,775.60 : x
  2. Step 2: Convert to fraction form
    782,801.20/1,174,201.80 = 408,775.60/x
  3. Step 3: Cross multiply
    782,801.20x = 1,174,201.80 × 408,775.60
  4. Step 4: Simplify right side
    782,801.20x = 479,985,045,316.08
  5. Step 5: Solve for x
    x = 479,985,045,316.08/782,801.20
  6. Step 6: Final answer
    x = 613,163.40

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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.