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Finding the Fourth Proportional to 492,653.82, 679,804.50 and 277,781.08

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Solution

The fourth proportional to 492,653.82, 679,804.50 and 277,781.08 is: 383,305.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,653.82 : 679,804.50 = 277,781.08 : x
  2. Step 2: Convert to fraction form
    492,653.82/679,804.50 = 277,781.08/x
  3. Step 3: Cross multiply
    492,653.82x = 679,804.50 × 277,781.08
  4. Step 4: Simplify right side
    492,653.82x = 188,836,828,198.86
  5. Step 5: Solve for x
    x = 188,836,828,198.86/492,653.82
  6. Step 6: Final answer
    x = 383,305.32

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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.