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Finding the Fourth Proportional to 492,398.60, 679,059.06 and 322,726.28

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Solution

The fourth proportional to 492,398.60, 679,059.06 and 322,726.28 is: 445,066.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,398.60 : 679,059.06 = 322,726.28 : x
  2. Step 2: Convert to fraction form
    492,398.60/679,059.06 = 322,726.28/x
  3. Step 3: Cross multiply
    492,398.60x = 679,059.06 × 322,726.28
  4. Step 4: Simplify right side
    492,398.60x = 219,150,204,334.10
  5. Step 5: Solve for x
    x = 219,150,204,334.10/492,398.60
  6. Step 6: Final answer
    x = 445,066.67

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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.