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Finding the Fourth Proportional to 619,564.80, 927,964.80 and 508,972.80

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Solution

The fourth proportional to 619,564.80, 927,964.80 and 508,972.80 is: 762,323.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,564.80 : 927,964.80 = 508,972.80 : x
  2. Step 2: Convert to fraction form
    619,564.80/927,964.80 = 508,972.80/x
  3. Step 3: Cross multiply
    619,564.80x = 927,964.80 × 508,972.80
  4. Step 4: Simplify right side
    619,564.80x = 472,308,842,557.44
  5. Step 5: Solve for x
    x = 472,308,842,557.44/619,564.80
  6. Step 6: Final answer
    x = 762,323.56

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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.