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Finding the Fourth Proportional to 694,622.51, 958,619.23 and 388,696.22

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Solution

The fourth proportional to 694,622.51, 958,619.23 and 388,696.22 is: 536,423.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,622.51 : 958,619.23 = 388,696.22 : x
  2. Step 2: Convert to fraction form
    694,622.51/958,619.23 = 388,696.22/x
  3. Step 3: Cross multiply
    694,622.51x = 958,619.23 × 388,696.22
  4. Step 4: Simplify right side
    694,622.51x = 372,611,667,298.96
  5. Step 5: Solve for x
    x = 372,611,667,298.96/694,622.51
  6. Step 6: Final answer
    x = 536,423.26

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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.