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Finding the Fourth Proportional to 628,667.73, 867,580.03 and 445,234.47

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Solution

The fourth proportional to 628,667.73, 867,580.03 and 445,234.47 is: 614,436.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,667.73 : 867,580.03 = 445,234.47 : x
  2. Step 2: Convert to fraction form
    628,667.73/867,580.03 = 445,234.47/x
  3. Step 3: Cross multiply
    628,667.73x = 867,580.03 × 445,234.47
  4. Step 4: Simplify right side
    628,667.73x = 386,276,537,022.89
  5. Step 5: Solve for x
    x = 386,276,537,022.89/628,667.73
  6. Step 6: Final answer
    x = 614,436.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.