Home / 1,279,171.11-1,918,730.31-426,304.69

Finding the Fourth Proportional to 1,279,171.11, 1,918,730.31 and 426,304.69

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Solution

The fourth proportional to 1,279,171.11, 1,918,730.31 and 426,304.69 is: 639,448.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,171.11 : 1,918,730.31 = 426,304.69 : x
  2. Step 2: Convert to fraction form
    1,279,171.11/1,918,730.31 = 426,304.69/x
  3. Step 3: Cross multiply
    1,279,171.11x = 1,918,730.31 × 426,304.69
  4. Step 4: Simplify right side
    1,279,171.11x = 817,963,735,860.74
  5. Step 5: Solve for x
    x = 817,963,735,860.74/1,279,171.11
  6. Step 6: Final answer
    x = 639,448.26

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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.