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Finding the Fourth Proportional to 694,310.69, 958,237.34 and 388,404.06

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Solution

The fourth proportional to 694,310.69, 958,237.34 and 388,404.06 is: 536,047.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,310.69 : 958,237.34 = 388,404.06 : x
  2. Step 2: Convert to fraction form
    694,310.69/958,237.34 = 388,404.06/x
  3. Step 3: Cross multiply
    694,310.69x = 958,237.34 × 388,404.06
  4. Step 4: Simplify right side
    694,310.69x = 372,183,271,357.58
  5. Step 5: Solve for x
    x = 372,183,271,357.58/694,310.69
  6. Step 6: Final answer
    x = 536,047.16

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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.