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Finding the Fourth Proportional to 540,013.60, 810,020.40 and 440,286.40

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Solution

The fourth proportional to 540,013.60, 810,020.40 and 440,286.40 is: 660,429.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,013.60 : 810,020.40 = 440,286.40 : x
  2. Step 2: Convert to fraction form
    540,013.60/810,020.40 = 440,286.40/x
  3. Step 3: Cross multiply
    540,013.60x = 810,020.40 × 440,286.40
  4. Step 4: Simplify right side
    540,013.60x = 356,640,965,842.56
  5. Step 5: Solve for x
    x = 356,640,965,842.56/540,013.60
  6. Step 6: Final answer
    x = 660,429.60

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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.