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Finding the Fourth Proportional to 604,013.20, 906,019.80 and 324,077.20

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Solution

The fourth proportional to 604,013.20, 906,019.80 and 324,077.20 is: 486,115.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,013.20 : 906,019.80 = 324,077.20 : x
  2. Step 2: Convert to fraction form
    604,013.20/906,019.80 = 324,077.20/x
  3. Step 3: Cross multiply
    604,013.20x = 906,019.80 × 324,077.20
  4. Step 4: Simplify right side
    604,013.20x = 293,620,359,928.56
  5. Step 5: Solve for x
    x = 293,620,359,928.56/604,013.20
  6. Step 6: Final answer
    x = 486,115.80

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Double scale
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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.