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Finding the Fourth Proportional to 577,279.95, 796,612.02 and 319,141.44

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Solution

The fourth proportional to 577,279.95, 796,612.02 and 319,141.44 is: 440,396.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,279.95 : 796,612.02 = 319,141.44 : x
  2. Step 2: Convert to fraction form
    577,279.95/796,612.02 = 319,141.44/x
  3. Step 3: Cross multiply
    577,279.95x = 796,612.02 × 319,141.44
  4. Step 4: Simplify right side
    577,279.95x = 254,231,907,184.11
  5. Step 5: Solve for x
    x = 254,231,907,184.11/577,279.95
  6. Step 6: Final answer
    x = 440,396.22

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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.