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Finding the Fourth Proportional to 490,561.60, 735,939.60 and 412,218.40

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Solution

The fourth proportional to 490,561.60, 735,939.60 and 412,218.40 is: 618,409.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,561.60 : 735,939.60 = 412,218.40 : x
  2. Step 2: Convert to fraction form
    490,561.60/735,939.60 = 412,218.40/x
  3. Step 3: Cross multiply
    490,561.60x = 735,939.60 × 412,218.40
  4. Step 4: Simplify right side
    490,561.60x = 303,367,844,408.64
  5. Step 5: Solve for x
    x = 303,367,844,408.64/490,561.60
  6. Step 6: Final answer
    x = 618,409.28

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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.