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Finding the Fourth Proportional to 863,787.10, 1,295,929.66 and 264,836.64

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Solution

The fourth proportional to 863,787.10, 1,295,929.66 and 264,836.64 is: 397,331.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,787.10 : 1,295,929.66 = 264,836.64 : x
  2. Step 2: Convert to fraction form
    863,787.10/1,295,929.66 = 264,836.64/x
  3. Step 3: Cross multiply
    863,787.10x = 1,295,929.66 × 264,836.64
  4. Step 4: Simplify right side
    863,787.10x = 343,209,656,830.74
  5. Step 5: Solve for x
    x = 343,209,656,830.74/863,787.10
  6. Step 6: Final answer
    x = 397,331.31

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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.