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Finding the Fourth Proportional to 578,005.32, 797,629.32 and 319,866.73

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Solution

The fourth proportional to 578,005.32, 797,629.32 and 319,866.73 is: 441,406.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,005.32 : 797,629.32 = 319,866.73 : x
  2. Step 2: Convert to fraction form
    578,005.32/797,629.32 = 319,866.73/x
  3. Step 3: Cross multiply
    578,005.32x = 797,629.32 × 319,866.73
  4. Step 4: Simplify right side
    578,005.32x = 255,135,082,340.52
  5. Step 5: Solve for x
    x = 255,135,082,340.52/578,005.32
  6. Step 6: Final answer
    x = 441,406.11

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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.