Home / 878,143.26-1,211,838.90-475,735.26

Finding the Fourth Proportional to 878,143.26, 1,211,838.90 and 475,735.26

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Solution

The fourth proportional to 878,143.26, 1,211,838.90 and 475,735.26 is: 656,515.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,143.26 : 1,211,838.90 = 475,735.26 : x
  2. Step 2: Convert to fraction form
    878,143.26/1,211,838.90 = 475,735.26/x
  3. Step 3: Cross multiply
    878,143.26x = 1,211,838.90 × 475,735.26
  4. Step 4: Simplify right side
    878,143.26x = 576,514,494,169.61
  5. Step 5: Solve for x
    x = 576,514,494,169.61/878,143.26
  6. Step 6: Final answer
    x = 656,515.31

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1.5x scale

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.