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Finding the Fourth Proportional to 619,989.39, 930,270.09 and 283,133.30

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Solution

The fourth proportional to 619,989.39, 930,270.09 and 283,133.30 is: 424,830.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,989.39 : 930,270.09 = 283,133.30 : x
  2. Step 2: Convert to fraction form
    619,989.39/930,270.09 = 283,133.30/x
  3. Step 3: Cross multiply
    619,989.39x = 930,270.09 × 283,133.30
  4. Step 4: Simplify right side
    619,989.39x = 263,390,440,473.00
  5. Step 5: Solve for x
    x = 263,390,440,473.00/619,989.39
  6. Step 6: Final answer
    x = 424,830.56

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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.