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Finding the Fourth Proportional to 658,908.20, 987,232.88 and 442,361.36

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Solution

The fourth proportional to 658,908.20, 987,232.88 and 442,361.36 is: 662,783.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,908.20 : 987,232.88 = 442,361.36 : x
  2. Step 2: Convert to fraction form
    658,908.20/987,232.88 = 442,361.36/x
  3. Step 3: Cross multiply
    658,908.20x = 987,232.88 × 442,361.36
  4. Step 4: Simplify right side
    658,908.20x = 436,713,679,433.52
  5. Step 5: Solve for x
    x = 436,713,679,433.52/658,908.20
  6. Step 6: Final answer
    x = 662,783.80

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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.