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Finding the Fourth Proportional to 694,429.95, 958,350.54 and 388,488.08

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Solution

The fourth proportional to 694,429.95, 958,350.54 and 388,488.08 is: 536,134.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,429.95 : 958,350.54 = 388,488.08 : x
  2. Step 2: Convert to fraction form
    694,429.95/958,350.54 = 388,488.08/x
  3. Step 3: Cross multiply
    694,429.95x = 958,350.54 × 388,488.08
  4. Step 4: Simplify right side
    694,429.95x = 372,307,761,251.56
  5. Step 5: Solve for x
    x = 372,307,761,251.56/694,429.95
  6. Step 6: Final answer
    x = 536,134.37

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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.