Home / 878,015.16-1,211,636.04-515,433.24

Finding the Fourth Proportional to 878,015.16, 1,211,636.04 and 515,433.24

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Solution

The fourth proportional to 878,015.16, 1,211,636.04 and 515,433.24 is: 711,283.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,015.16 : 1,211,636.04 = 515,433.24 : x
  2. Step 2: Convert to fraction form
    878,015.16/1,211,636.04 = 515,433.24/x
  3. Step 3: Cross multiply
    878,015.16x = 1,211,636.04 × 515,433.24
  4. Step 4: Simplify right side
    878,015.16x = 624,517,489,797.97
  5. Step 5: Solve for x
    x = 624,517,489,797.97/878,015.16
  6. Step 6: Final answer
    x = 711,283.27

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Double scale
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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.