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Finding the Fourth Proportional to 576,698.94, 795,867.06 and 318,589.20

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Solution

The fourth proportional to 576,698.94, 795,867.06 and 318,589.20 is: 439,665.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,698.94 : 795,867.06 = 318,589.20 : x
  2. Step 2: Convert to fraction form
    576,698.94/795,867.06 = 318,589.20/x
  3. Step 3: Cross multiply
    576,698.94x = 795,867.06 × 318,589.20
  4. Step 4: Simplify right side
    576,698.94x = 253,554,649,951.75
  5. Step 5: Solve for x
    x = 253,554,649,951.75/576,698.94
  6. Step 6: Final answer
    x = 439,665.54

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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.