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Finding the Fourth Proportional to 492,804.45, 680,068.79 and 275,010.80

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Solution

The fourth proportional to 492,804.45, 680,068.79 and 275,010.80 is: 379,514.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,804.45 : 680,068.79 = 275,010.80 : x
  2. Step 2: Convert to fraction form
    492,804.45/680,068.79 = 275,010.80/x
  3. Step 3: Cross multiply
    492,804.45x = 680,068.79 × 275,010.80
  4. Step 4: Simplify right side
    492,804.45x = 187,026,258,248.83
  5. Step 5: Solve for x
    x = 187,026,258,248.83/492,804.45
  6. Step 6: Final answer
    x = 379,514.14

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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.