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Finding the Fourth Proportional to 515,644.71, 773,487.78 and 245,634.04

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Solution

The fourth proportional to 515,644.71, 773,487.78 and 245,634.04 is: 368,460.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,644.71 : 773,487.78 = 245,634.04 : x
  2. Step 2: Convert to fraction form
    515,644.71/773,487.78 = 245,634.04/x
  3. Step 3: Cross multiply
    515,644.71x = 773,487.78 × 245,634.04
  4. Step 4: Simplify right side
    515,644.71x = 189,994,928,292.03
  5. Step 5: Solve for x
    x = 189,994,928,292.03/515,644.71
  6. Step 6: Final answer
    x = 368,460.93

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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.