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Finding the Fourth Proportional to 554,625.88, 765,317.85 and 312,894.34

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Solution

The fourth proportional to 554,625.88, 765,317.85 and 312,894.34 is: 431,757.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,625.88 : 765,317.85 = 312,894.34 : x
  2. Step 2: Convert to fraction form
    554,625.88/765,317.85 = 312,894.34/x
  3. Step 3: Cross multiply
    554,625.88x = 765,317.85 × 312,894.34
  4. Step 4: Simplify right side
    554,625.88x = 239,463,623,565.97
  5. Step 5: Solve for x
    x = 239,463,623,565.97/554,625.88
  6. Step 6: Final answer
    x = 431,757.03

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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.