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Finding the Fourth Proportional to 658,620.96, 987,138.48 and 303,148.32

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Solution

The fourth proportional to 658,620.96, 987,138.48 and 303,148.32 is: 454,357.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,620.96 : 987,138.48 = 303,148.32 : x
  2. Step 2: Convert to fraction form
    658,620.96/987,138.48 = 303,148.32/x
  3. Step 3: Cross multiply
    658,620.96x = 987,138.48 × 303,148.32
  4. Step 4: Simplify right side
    658,620.96x = 299,249,371,819.35
  5. Step 5: Solve for x
    x = 299,249,371,819.35/658,620.96
  6. Step 6: Final answer
    x = 454,357.50

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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.