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Finding the Fourth Proportional to 619,798.42, 930,195.78 and 320,366.73

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Solution

The fourth proportional to 619,798.42, 930,195.78 and 320,366.73 is: 480,807.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,798.42 : 930,195.78 = 320,366.73 : x
  2. Step 2: Convert to fraction form
    619,798.42/930,195.78 = 320,366.73/x
  3. Step 3: Cross multiply
    619,798.42x = 930,195.78 × 320,366.73
  4. Step 4: Simplify right side
    619,798.42x = 298,003,780,298.40
  5. Step 5: Solve for x
    x = 298,003,780,298.40/619,798.42
  6. Step 6: Final answer
    x = 480,807.58

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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.