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Finding the Fourth Proportional to 573,022.08, 790,790.40 and 318,384

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Solution

The fourth proportional to 573,022.08, 790,790.40 and 318,384 is: 439,380.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,022.08 : 790,790.40 = 318,384 : x
  2. Step 2: Convert to fraction form
    573,022.08/790,790.40 = 318,384/x
  3. Step 3: Cross multiply
    573,022.08x = 790,790.40 × 318,384
  4. Step 4: Simplify right side
    573,022.08x = 251,775,010,713.60
  5. Step 5: Solve for x
    x = 251,775,010,713.60/573,022.08
  6. Step 6: Final answer
    x = 439,380.99

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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.