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Finding the Fourth Proportional to 578,940.46, 798,963.30 and 320,816.68

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Solution

The fourth proportional to 578,940.46, 798,963.30 and 320,816.68 is: 442,741.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,940.46 : 798,963.30 = 320,816.68 : x
  2. Step 2: Convert to fraction form
    578,940.46/798,963.30 = 320,816.68/x
  3. Step 3: Cross multiply
    578,940.46x = 798,963.30 × 320,816.68
  4. Step 4: Simplify right side
    578,940.46x = 256,320,753,347.84
  5. Step 5: Solve for x
    x = 256,320,753,347.84/578,940.46
  6. Step 6: Final answer
    x = 442,741.13

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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.