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Finding the Fourth Proportional to 578,714.24, 798,625.54 and 320,607.96

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Solution

The fourth proportional to 578,714.24, 798,625.54 and 320,607.96 is: 442,438.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,714.24 : 798,625.54 = 320,607.96 : x
  2. Step 2: Convert to fraction form
    578,714.24/798,625.54 = 320,607.96/x
  3. Step 3: Cross multiply
    578,714.24x = 798,625.54 × 320,607.96
  4. Step 4: Simplify right side
    578,714.24x = 256,045,705,183.30
  5. Step 5: Solve for x
    x = 256,045,705,183.30/578,714.24
  6. Step 6: Final answer
    x = 442,438.92

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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.