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Finding the Fourth Proportional to 578,253.09, 797,990.31 and 320,147.91

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Solution

The fourth proportional to 578,253.09, 797,990.31 and 320,147.91 is: 441,804.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,253.09 : 797,990.31 = 320,147.91 : x
  2. Step 2: Convert to fraction form
    578,253.09/797,990.31 = 320,147.91/x
  3. Step 3: Cross multiply
    578,253.09x = 797,990.31 × 320,147.91
  4. Step 4: Simplify right side
    578,253.09x = 255,474,929,946.75
  5. Step 5: Solve for x
    x = 255,474,929,946.75/578,253.09
  6. Step 6: Final answer
    x = 441,804.69

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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.