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Finding the Fourth Proportional to 577,346.52, 796,705.90 and 319,208.43

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Solution

The fourth proportional to 577,346.52, 796,705.90 and 319,208.43 is: 440,489.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,346.52 : 796,705.90 = 319,208.43 : x
  2. Step 2: Convert to fraction form
    577,346.52/796,705.90 = 319,208.43/x
  3. Step 3: Cross multiply
    577,346.52x = 796,705.90 × 319,208.43
  4. Step 4: Simplify right side
    577,346.52x = 254,315,238,712.72
  5. Step 5: Solve for x
    x = 254,315,238,712.72/577,346.52
  6. Step 6: Final answer
    x = 440,489.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.