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Finding the Fourth Proportional to 694,323.08, 958,120.65 and 388,346.45

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Solution

The fourth proportional to 694,323.08, 958,120.65 and 388,346.45 is: 535,892.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,323.08 : 958,120.65 = 388,346.45 : x
  2. Step 2: Convert to fraction form
    694,323.08/958,120.65 = 388,346.45/x
  3. Step 3: Cross multiply
    694,323.08x = 958,120.65 × 388,346.45
  4. Step 4: Simplify right side
    694,323.08x = 372,082,753,099.19
  5. Step 5: Solve for x
    x = 372,082,753,099.19/694,323.08
  6. Step 6: Final answer
    x = 535,892.82

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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.