Home / 644,306.69-966,453.89-391,656.95

Finding the Fourth Proportional to 644,306.69, 966,453.89 and 391,656.95

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Solution

The fourth proportional to 644,306.69, 966,453.89 and 391,656.95 is: 587,481.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,306.69 : 966,453.89 = 391,656.95 : x
  2. Step 2: Convert to fraction form
    644,306.69/966,453.89 = 391,656.95/x
  3. Step 3: Cross multiply
    644,306.69x = 966,453.89 × 391,656.95
  4. Step 4: Simplify right side
    644,306.69x = 378,518,384,799.60
  5. Step 5: Solve for x
    x = 378,518,384,799.60/644,306.69
  6. Step 6: Final answer
    x = 587,481.69

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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.