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Finding the Fourth Proportional to 848,239, 1,170,572.25 and 485,668.42

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Solution

The fourth proportional to 848,239, 1,170,572.25 and 485,668.42 is: 670,223.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    848,239 : 1,170,572.25 = 485,668.42 : x
  2. Step 2: Convert to fraction form
    848,239/1,170,572.25 = 485,668.42/x
  3. Step 3: Cross multiply
    848,239x = 1,170,572.25 × 485,668.42
  4. Step 4: Simplify right side
    848,239x = 568,509,975,153.35
  5. Step 5: Solve for x
    x = 568,509,975,153.35/848,239
  6. Step 6: Final answer
    x = 670,223.81

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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.