Home / 641,821.78-962,934.09-385,948.86

Finding the Fourth Proportional to 641,821.78, 962,934.09 and 385,948.86

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Solution

The fourth proportional to 641,821.78, 962,934.09 and 385,948.86 is: 579,044.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,821.78 : 962,934.09 = 385,948.86 : x
  2. Step 2: Convert to fraction form
    641,821.78/962,934.09 = 385,948.86/x
  3. Step 3: Cross multiply
    641,821.78x = 962,934.09 × 385,948.86
  4. Step 4: Simplify right side
    641,821.78x = 371,643,314,290.64
  5. Step 5: Solve for x
    x = 371,643,314,290.64/641,821.78
  6. Step 6: Final answer
    x = 579,044.41

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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.