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Finding the Fourth Proportional to 559,022.08, 771,456 and 320,512

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Solution

The fourth proportional to 559,022.08, 771,456 and 320,512 is: 442,309.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,022.08 : 771,456 = 320,512 : x
  2. Step 2: Convert to fraction form
    559,022.08/771,456 = 320,512/x
  3. Step 3: Cross multiply
    559,022.08x = 771,456 × 320,512
  4. Step 4: Simplify right side
    559,022.08x = 247,260,905,472
  5. Step 5: Solve for x
    x = 247,260,905,472/559,022.08
  6. Step 6: Final answer
    x = 442,309.73

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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.