Home / 1,130,778.20-1,560,455.81-621,469.64

Finding the Fourth Proportional to 1,130,778.20, 1,560,455.81 and 621,469.64

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Solution

The fourth proportional to 1,130,778.20, 1,560,455.81 and 621,469.64 is: 857,618.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,130,778.20 : 1,560,455.81 = 621,469.64 : x
  2. Step 2: Convert to fraction form
    1,130,778.20/1,560,455.81 = 621,469.64/x
  3. Step 3: Cross multiply
    1,130,778.20x = 1,560,455.81 × 621,469.64
  4. Step 4: Simplify right side
    1,130,778.20x = 969,775,907,369.26
  5. Step 5: Solve for x
    x = 969,775,907,369.26/1,130,778.20
  6. Step 6: Final answer
    x = 857,618.15

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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.