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Finding the Fourth Proportional to 492,249.60, 679,276.80 and 291,110.40

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Solution

The fourth proportional to 492,249.60, 679,276.80 and 291,110.40 is: 401,716.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,249.60 : 679,276.80 = 291,110.40 : x
  2. Step 2: Convert to fraction form
    492,249.60/679,276.80 = 291,110.40/x
  3. Step 3: Cross multiply
    492,249.60x = 679,276.80 × 291,110.40
  4. Step 4: Simplify right side
    492,249.60x = 197,744,540,958.72
  5. Step 5: Solve for x
    x = 197,744,540,958.72/492,249.60
  6. Step 6: Final answer
    x = 401,716.00

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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.