Home / 518,200.78-777,301.17-202,436.26

Finding the Fourth Proportional to 518,200.78, 777,301.17 and 202,436.26

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Solution

The fourth proportional to 518,200.78, 777,301.17 and 202,436.26 is: 303,654.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,200.78 : 777,301.17 = 202,436.26 : x
  2. Step 2: Convert to fraction form
    518,200.78/777,301.17 = 202,436.26/x
  3. Step 3: Cross multiply
    518,200.78x = 777,301.17 × 202,436.26
  4. Step 4: Simplify right side
    518,200.78x = 157,353,941,748.42
  5. Step 5: Solve for x
    x = 157,353,941,748.42/518,200.78
  6. Step 6: Final answer
    x = 303,654.39

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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.