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Finding the Fourth Proportional to 658,958.75, 987,309.66 and 359,649.32

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Solution

The fourth proportional to 658,958.75, 987,309.66 and 359,649.32 is: 538,858.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,958.75 : 987,309.66 = 359,649.32 : x
  2. Step 2: Convert to fraction form
    658,958.75/987,309.66 = 359,649.32/x
  3. Step 3: Cross multiply
    658,958.75x = 987,309.66 × 359,649.32
  4. Step 4: Simplify right side
    658,958.75x = 355,085,247,848.43
  5. Step 5: Solve for x
    x = 355,085,247,848.43/658,958.75
  6. Step 6: Final answer
    x = 538,858.08

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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.