Home / 806,072.40-1,209,886.20-407,163.60

Finding the Fourth Proportional to 806,072.40, 1,209,886.20 and 407,163.60

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Solution

The fourth proportional to 806,072.40, 1,209,886.20 and 407,163.60 is: 611,138.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,072.40 : 1,209,886.20 = 407,163.60 : x
  2. Step 2: Convert to fraction form
    806,072.40/1,209,886.20 = 407,163.60/x
  3. Step 3: Cross multiply
    806,072.40x = 1,209,886.20 × 407,163.60
  4. Step 4: Simplify right side
    806,072.40x = 492,621,620,782.32
  5. Step 5: Solve for x
    x = 492,621,620,782.32/806,072.40
  6. Step 6: Final answer
    x = 611,138.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.