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Finding the Fourth Proportional to 515,589.41, 711,598.89 and 300,729.46

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Solution

The fourth proportional to 515,589.41, 711,598.89 and 300,729.46 is: 415,056.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,589.41 : 711,598.89 = 300,729.46 : x
  2. Step 2: Convert to fraction form
    515,589.41/711,598.89 = 300,729.46/x
  3. Step 3: Cross multiply
    515,589.41x = 711,598.89 × 300,729.46
  4. Step 4: Simplify right side
    515,589.41x = 213,998,749,926.30
  5. Step 5: Solve for x
    x = 213,998,749,926.30/515,589.41
  6. Step 6: Final answer
    x = 415,056.53

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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.