Home / 642,790.65-964,195.70-243,324.17

Finding the Fourth Proportional to 642,790.65, 964,195.70 and 243,324.17

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Solution

The fourth proportional to 642,790.65, 964,195.70 and 243,324.17 is: 364,989.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,790.65 : 964,195.70 = 243,324.17 : x
  2. Step 2: Convert to fraction form
    642,790.65/964,195.70 = 243,324.17/x
  3. Step 3: Cross multiply
    642,790.65x = 964,195.70 × 243,324.17
  4. Step 4: Simplify right side
    642,790.65x = 234,612,112,382.47
  5. Step 5: Solve for x
    x = 234,612,112,382.47/642,790.65
  6. Step 6: Final answer
    x = 364,989.93

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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.