Home / 961,743.39-1,443,111.81-422,378.49

Finding the Fourth Proportional to 961,743.39, 1,443,111.81 and 422,378.49

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Solution

The fourth proportional to 961,743.39, 1,443,111.81 and 422,378.49 is: 633,785.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    961,743.39 : 1,443,111.81 = 422,378.49 : x
  2. Step 2: Convert to fraction form
    961,743.39/1,443,111.81 = 422,378.49/x
  3. Step 3: Cross multiply
    961,743.39x = 1,443,111.81 × 422,378.49
  4. Step 4: Simplify right side
    961,743.39x = 609,539,387,208.97
  5. Step 5: Solve for x
    x = 609,539,387,208.97/961,743.39
  6. Step 6: Final answer
    x = 633,785.89

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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.