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Finding the Fourth Proportional to 619,340.52, 929,871 and 320,042.28

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Solution

The fourth proportional to 619,340.52, 929,871 and 320,042.28 is: 480,507.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,340.52 : 929,871 = 320,042.28 : x
  2. Step 2: Convert to fraction form
    619,340.52/929,871 = 320,042.28/x
  3. Step 3: Cross multiply
    619,340.52x = 929,871 × 320,042.28
  4. Step 4: Simplify right side
    619,340.52x = 297,598,034,945.88
  5. Step 5: Solve for x
    x = 297,598,034,945.88/619,340.52
  6. Step 6: Final answer
    x = 480,507.94

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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.