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Finding the Fourth Proportional to 822,640.53, 1,234,391.10 and 336,683.40

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Solution

The fourth proportional to 822,640.53, 1,234,391.10 and 336,683.40 is: 505,201.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,640.53 : 1,234,391.10 = 336,683.40 : x
  2. Step 2: Convert to fraction form
    822,640.53/1,234,391.10 = 336,683.40/x
  3. Step 3: Cross multiply
    822,640.53x = 1,234,391.10 × 336,683.40
  4. Step 4: Simplify right side
    822,640.53x = 415,598,992,477.74
  5. Step 5: Solve for x
    x = 415,598,992,477.74/822,640.53
  6. Step 6: Final answer
    x = 505,201.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.