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Finding the Fourth Proportional to 694,804.79, 958,612.05 and 388,832.56

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Solution

The fourth proportional to 694,804.79, 958,612.05 and 388,832.56 is: 536,466.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,804.79 : 958,612.05 = 388,832.56 : x
  2. Step 2: Convert to fraction form
    694,804.79/958,612.05 = 388,832.56/x
  3. Step 3: Cross multiply
    694,804.79x = 958,612.05 × 388,832.56
  4. Step 4: Simplify right side
    694,804.79x = 372,739,574,905.65
  5. Step 5: Solve for x
    x = 372,739,574,905.65/694,804.79
  6. Step 6: Final answer
    x = 536,466.61

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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.