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Finding the Fourth Proportional to 515,584.63, 711,592.30 and 300,724.69

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Solution

The fourth proportional to 515,584.63, 711,592.30 and 300,724.69 is: 415,049.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,584.63 : 711,592.30 = 300,724.69 : x
  2. Step 2: Convert to fraction form
    515,584.63/711,592.30 = 300,724.69/x
  3. Step 3: Cross multiply
    515,584.63x = 711,592.30 × 300,724.69
  4. Step 4: Simplify right side
    515,584.63x = 213,993,373,823.89
  5. Step 5: Solve for x
    x = 213,993,373,823.89/515,584.63
  6. Step 6: Final answer
    x = 415,049.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.