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Finding the Fourth Proportional to 492,400.50, 679,551.57 and 274,640.10

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Solution

The fourth proportional to 492,400.50, 679,551.57 and 274,640.10 is: 379,025.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,400.50 : 679,551.57 = 274,640.10 : x
  2. Step 2: Convert to fraction form
    492,400.50/679,551.57 = 274,640.10/x
  3. Step 3: Cross multiply
    492,400.50x = 679,551.57 × 274,640.10
  4. Step 4: Simplify right side
    492,400.50x = 186,632,111,139.96
  5. Step 5: Solve for x
    x = 186,632,111,139.96/492,400.50
  6. Step 6: Final answer
    x = 379,025.02

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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.