Home / 384,789.20-576,527.70-328,364.60

Finding the Fourth Proportional to 384,789.20, 576,527.70 and 328,364.60

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Solution

The fourth proportional to 384,789.20, 576,527.70 and 328,364.60 is: 491,987.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,789.20 : 576,527.70 = 328,364.60 : x
  2. Step 2: Convert to fraction form
    384,789.20/576,527.70 = 328,364.60/x
  3. Step 3: Cross multiply
    384,789.20x = 576,527.70 × 328,364.60
  4. Step 4: Simplify right side
    384,789.20x = 189,311,287,599.42
  5. Step 5: Solve for x
    x = 189,311,287,599.42/384,789.20
  6. Step 6: Final answer
    x = 491,987.01

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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.