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Finding the Fourth Proportional to 515,956.62, 773,018.37 and 440,309.10

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Solution

The fourth proportional to 515,956.62, 773,018.37 and 440,309.10 is: 659,681.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,956.62 : 773,018.37 = 440,309.10 : x
  2. Step 2: Convert to fraction form
    515,956.62/773,018.37 = 440,309.10/x
  3. Step 3: Cross multiply
    515,956.62x = 773,018.37 × 440,309.10
  4. Step 4: Simplify right side
    515,956.62x = 340,367,022,778.17
  5. Step 5: Solve for x
    x = 340,367,022,778.17/515,956.62
  6. Step 6: Final answer
    x = 659,681.47

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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.