Home / 867,208.60-1,301,201.70-393,650.20

Finding the Fourth Proportional to 867,208.60, 1,301,201.70 and 393,650.20

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Solution

The fourth proportional to 867,208.60, 1,301,201.70 and 393,650.20 is: 590,651.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,208.60 : 1,301,201.70 = 393,650.20 : x
  2. Step 2: Convert to fraction form
    867,208.60/1,301,201.70 = 393,650.20/x
  3. Step 3: Cross multiply
    867,208.60x = 1,301,201.70 × 393,650.20
  4. Step 4: Simplify right side
    867,208.60x = 512,218,309,445.34
  5. Step 5: Solve for x
    x = 512,218,309,445.34/867,208.60
  6. Step 6: Final answer
    x = 590,651.79

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Half scale
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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.