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Finding the Fourth Proportional to 492,471, 679,620.37 and 277,611.06

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Solution

The fourth proportional to 492,471, 679,620.37 and 277,611.06 is: 383,109.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,471 : 679,620.37 = 277,611.06 : x
  2. Step 2: Convert to fraction form
    492,471/679,620.37 = 277,611.06/x
  3. Step 3: Cross multiply
    492,471x = 679,620.37 × 277,611.06
  4. Step 4: Simplify right side
    492,471x = 188,670,130,619.27
  5. Step 5: Solve for x
    x = 188,670,130,619.27/492,471
  6. Step 6: Final answer
    x = 383,109.12

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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.