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Finding the Fourth Proportional to 554,806.90, 765,625.96 and 309,795.44

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Solution

The fourth proportional to 554,806.90, 765,625.96 and 309,795.44 is: 427,513.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,806.90 : 765,625.96 = 309,795.44 : x
  2. Step 2: Convert to fraction form
    554,806.90/765,625.96 = 309,795.44/x
  3. Step 3: Cross multiply
    554,806.90x = 765,625.96 × 309,795.44
  4. Step 4: Simplify right side
    554,806.90x = 237,187,426,551.00
  5. Step 5: Solve for x
    x = 237,187,426,551.00/554,806.90
  6. Step 6: Final answer
    x = 427,513.48

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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.