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Finding the Fourth Proportional to 554,408.19, 765,081.86 and 299,759.31

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Solution

The fourth proportional to 554,408.19, 765,081.86 and 299,759.31 is: 413,667.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,408.19 : 765,081.86 = 299,759.31 : x
  2. Step 2: Convert to fraction form
    554,408.19/765,081.86 = 299,759.31/x
  3. Step 3: Cross multiply
    554,408.19x = 765,081.86 × 299,759.31
  4. Step 4: Simplify right side
    554,408.19x = 229,340,408,948.32
  5. Step 5: Solve for x
    x = 229,340,408,948.32/554,408.19
  6. Step 6: Final answer
    x = 413,667.07

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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.