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Finding the Fourth Proportional to 659,213.80, 988,853.10 and 344,285.80

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Solution

The fourth proportional to 659,213.80, 988,853.10 and 344,285.80 is: 516,445.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,213.80 : 988,853.10 = 344,285.80 : x
  2. Step 2: Convert to fraction form
    659,213.80/988,853.10 = 344,285.80/x
  3. Step 3: Cross multiply
    659,213.80x = 988,853.10 × 344,285.80
  4. Step 4: Simplify right side
    659,213.80x = 340,448,080,615.98
  5. Step 5: Solve for x
    x = 340,448,080,615.98/659,213.80
  6. Step 6: Final answer
    x = 516,445.62

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1.5x scale

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.