Home / 644,813.22-889,823.55-369,161.85

Finding the Fourth Proportional to 644,813.22, 889,823.55 and 369,161.85

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Solution

The fourth proportional to 644,813.22, 889,823.55 and 369,161.85 is: 509,432.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,813.22 : 889,823.55 = 369,161.85 : x
  2. Step 2: Convert to fraction form
    644,813.22/889,823.55 = 369,161.85/x
  3. Step 3: Cross multiply
    644,813.22x = 889,823.55 × 369,161.85
  4. Step 4: Simplify right side
    644,813.22x = 328,488,907,891.57
  5. Step 5: Solve for x
    x = 328,488,907,891.57/644,813.22
  6. Step 6: Final answer
    x = 509,432.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.