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Finding the Fourth Proportional to 492,403.82, 679,507.80 and 277,539.71

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Solution

The fourth proportional to 492,403.82, 679,507.80 and 277,539.71 is: 382,999.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,403.82 : 679,507.80 = 277,539.71 : x
  2. Step 2: Convert to fraction form
    492,403.82/679,507.80 = 277,539.71/x
  3. Step 3: Cross multiply
    492,403.82x = 679,507.80 × 277,539.71
  4. Step 4: Simplify right side
    492,403.82x = 188,590,397,754.74
  5. Step 5: Solve for x
    x = 188,590,397,754.74/492,403.82
  6. Step 6: Final answer
    x = 382,999.46

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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.