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Finding the Fourth Proportional to 407,584.20, 611,376.30 and 302,608.20

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Solution

The fourth proportional to 407,584.20, 611,376.30 and 302,608.20 is: 453,912.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,584.20 : 611,376.30 = 302,608.20 : x
  2. Step 2: Convert to fraction form
    407,584.20/611,376.30 = 302,608.20/x
  3. Step 3: Cross multiply
    407,584.20x = 611,376.30 × 302,608.20
  4. Step 4: Simplify right side
    407,584.20x = 185,007,481,665.66
  5. Step 5: Solve for x
    x = 185,007,481,665.66/407,584.20
  6. Step 6: Final answer
    x = 453,912.30

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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.