Home / 644,825.85-965,763.90-308,103.05

Finding the Fourth Proportional to 644,825.85, 965,763.90 and 308,103.05

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Solution

The fourth proportional to 644,825.85, 965,763.90 and 308,103.05 is: 461,449.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,825.85 : 965,763.90 = 308,103.05 : x
  2. Step 2: Convert to fraction form
    644,825.85/965,763.90 = 308,103.05/x
  3. Step 3: Cross multiply
    644,825.85x = 965,763.90 × 308,103.05
  4. Step 4: Simplify right side
    644,825.85x = 297,554,798,341.08
  5. Step 5: Solve for x
    x = 297,554,798,341.08/644,825.85
  6. Step 6: Final answer
    x = 461,449.86

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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.