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Finding the Fourth Proportional to 554,806.44, 765,625.33 and 309,794.98

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Solution

The fourth proportional to 554,806.44, 765,625.33 and 309,794.98 is: 427,512.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,806.44 : 765,625.33 = 309,794.98 : x
  2. Step 2: Convert to fraction form
    554,806.44/765,625.33 = 309,794.98/x
  3. Step 3: Cross multiply
    554,806.44x = 765,625.33 × 309,794.98
  4. Step 4: Simplify right side
    554,806.44x = 237,186,881,960.98
  5. Step 5: Solve for x
    x = 237,186,881,960.98/554,806.44
  6. Step 6: Final answer
    x = 427,512.85

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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.