Home / 825,385.84-1,238,355.72-319,963.30

Finding the Fourth Proportional to 825,385.84, 1,238,355.72 and 319,963.30

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Solution

The fourth proportional to 825,385.84, 1,238,355.72 and 319,963.30 is: 480,052.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,385.84 : 1,238,355.72 = 319,963.30 : x
  2. Step 2: Convert to fraction form
    825,385.84/1,238,355.72 = 319,963.30/x
  3. Step 3: Cross multiply
    825,385.84x = 1,238,355.72 × 319,963.30
  4. Step 4: Simplify right side
    825,385.84x = 396,228,379,649.19
  5. Step 5: Solve for x
    x = 396,228,379,649.19/825,385.84
  6. Step 6: Final answer
    x = 480,052.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.