Home / 641,820.78-962,932.59-385,947.86

Finding the Fourth Proportional to 641,820.78, 962,932.59 and 385,947.86

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Solution

The fourth proportional to 641,820.78, 962,932.59 and 385,947.86 is: 579,042.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,820.78 : 962,932.59 = 385,947.86 : x
  2. Step 2: Convert to fraction form
    641,820.78/962,932.59 = 385,947.86/x
  3. Step 3: Cross multiply
    641,820.78x = 962,932.59 × 385,947.86
  4. Step 4: Simplify right side
    641,820.78x = 371,641,767,620.09
  5. Step 5: Solve for x
    x = 371,641,767,620.09/641,820.78
  6. Step 6: Final answer
    x = 579,042.90

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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.