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Finding the Fourth Proportional to 615,423.26, 848,614.57 and 400,164.14

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Solution

The fourth proportional to 615,423.26, 848,614.57 and 400,164.14 is: 551,791.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,423.26 : 848,614.57 = 400,164.14 : x
  2. Step 2: Convert to fraction form
    615,423.26/848,614.57 = 400,164.14/x
  3. Step 3: Cross multiply
    615,423.26x = 848,614.57 × 400,164.14
  4. Step 4: Simplify right side
    615,423.26x = 339,585,120,716.65
  5. Step 5: Solve for x
    x = 339,585,120,716.65/615,423.26
  6. Step 6: Final answer
    x = 551,791.17

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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.