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Finding the Fourth Proportional to 659,315.20, 988,972.80 and 593,996.80

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Solution

The fourth proportional to 659,315.20, 988,972.80 and 593,996.80 is: 890,995.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,315.20 : 988,972.80 = 593,996.80 : x
  2. Step 2: Convert to fraction form
    659,315.20/988,972.80 = 593,996.80/x
  3. Step 3: Cross multiply
    659,315.20x = 988,972.80 × 593,996.80
  4. Step 4: Simplify right side
    659,315.20x = 587,446,678,487.04
  5. Step 5: Solve for x
    x = 587,446,678,487.04/659,315.20
  6. Step 6: Final answer
    x = 890,995.20

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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.