Home / 642,642.89-963,742.38-263,455.97

Finding the Fourth Proportional to 642,642.89, 963,742.38 and 263,455.97

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Solution

The fourth proportional to 642,642.89, 963,742.38 and 263,455.97 is: 395,092.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,642.89 : 963,742.38 = 263,455.97 : x
  2. Step 2: Convert to fraction form
    642,642.89/963,742.38 = 263,455.97/x
  3. Step 3: Cross multiply
    642,642.89x = 963,742.38 × 263,455.97
  4. Step 4: Simplify right side
    642,642.89x = 253,903,678,734.30
  5. Step 5: Solve for x
    x = 253,903,678,734.30/642,642.89
  6. Step 6: Final answer
    x = 395,092.96

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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.