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Finding the Fourth Proportional to 324,621.40, 486,348.90 and 277,965.40

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Solution

The fourth proportional to 324,621.40, 486,348.90 and 277,965.40 is: 416,448.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,621.40 : 486,348.90 = 277,965.40 : x
  2. Step 2: Convert to fraction form
    324,621.40/486,348.90 = 277,965.40/x
  3. Step 3: Cross multiply
    324,621.40x = 486,348.90 × 277,965.40
  4. Step 4: Simplify right side
    324,621.40x = 135,188,166,528.06
  5. Step 5: Solve for x
    x = 135,188,166,528.06/324,621.40
  6. Step 6: Final answer
    x = 416,448.72

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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.