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Finding the Fourth Proportional to 490,697.78, 677,676.93 and 338,132.66

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Solution

The fourth proportional to 490,697.78, 677,676.93 and 338,132.66 is: 466,977.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,697.78 : 677,676.93 = 338,132.66 : x
  2. Step 2: Convert to fraction form
    490,697.78/677,676.93 = 338,132.66/x
  3. Step 3: Cross multiply
    490,697.78x = 677,676.93 × 338,132.66
  4. Step 4: Simplify right side
    490,697.78x = 229,144,702,961.53
  5. Step 5: Solve for x
    x = 229,144,702,961.53/490,697.78
  6. Step 6: Final answer
    x = 466,977.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.