Home / 642,908.31-964,294.80-263,869.12

Finding the Fourth Proportional to 642,908.31, 964,294.80 and 263,869.12

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Solution

The fourth proportional to 642,908.31, 964,294.80 and 263,869.12 is: 395,775.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,908.31 : 964,294.80 = 263,869.12 : x
  2. Step 2: Convert to fraction form
    642,908.31/964,294.80 = 263,869.12/x
  3. Step 3: Cross multiply
    642,908.31x = 964,294.80 × 263,869.12
  4. Step 4: Simplify right side
    642,908.31x = 254,447,620,296.58
  5. Step 5: Solve for x
    x = 254,447,620,296.58/642,908.31
  6. Step 6: Final answer
    x = 395,775.91

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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.