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Finding the Fourth Proportional to 694,228.79, 958,124.43 and 388,322.17

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Solution

The fourth proportional to 694,228.79, 958,124.43 and 388,322.17 is: 535,934.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,228.79 : 958,124.43 = 388,322.17 : x
  2. Step 2: Convert to fraction form
    694,228.79/958,124.43 = 388,322.17/x
  3. Step 3: Cross multiply
    694,228.79x = 958,124.43 × 388,322.17
  4. Step 4: Simplify right side
    694,228.79x = 372,060,955,392.30
  5. Step 5: Solve for x
    x = 372,060,955,392.30/694,228.79
  6. Step 6: Final answer
    x = 535,934.20

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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.