Home / 1,221,221.39-1,832,012.51-422,288.42

Finding the Fourth Proportional to 1,221,221.39, 1,832,012.51 and 422,288.42

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Solution

The fourth proportional to 1,221,221.39, 1,832,012.51 and 422,288.42 is: 633,495.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,221.39 : 1,832,012.51 = 422,288.42 : x
  2. Step 2: Convert to fraction form
    1,221,221.39/1,832,012.51 = 422,288.42/x
  3. Step 3: Cross multiply
    1,221,221.39x = 1,832,012.51 × 422,288.42
  4. Step 4: Simplify right side
    1,221,221.39x = 773,637,656,996.63
  5. Step 5: Solve for x
    x = 773,637,656,996.63/1,221,221.39
  6. Step 6: Final answer
    x = 633,495.01

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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.