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Finding the Fourth Proportional to 492,775.80, 680,028.86 and 277,914.60

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Solution

The fourth proportional to 492,775.80, 680,028.86 and 277,914.60 is: 383,521.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,775.80 : 680,028.86 = 277,914.60 : x
  2. Step 2: Convert to fraction form
    492,775.80/680,028.86 = 277,914.60/x
  3. Step 3: Cross multiply
    492,775.80x = 680,028.86 × 277,914.60
  4. Step 4: Simplify right side
    492,775.80x = 188,989,948,615.36
  5. Step 5: Solve for x
    x = 188,989,948,615.36/492,775.80
  6. Step 6: Final answer
    x = 383,521.16

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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.