Home / 1,086,647.40-1,628,804.70-412,468.20

Finding the Fourth Proportional to 1,086,647.40, 1,628,804.70 and 412,468.20

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Solution

The fourth proportional to 1,086,647.40, 1,628,804.70 and 412,468.20 is: 618,259.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,647.40 : 1,628,804.70 = 412,468.20 : x
  2. Step 2: Convert to fraction form
    1,086,647.40/1,628,804.70 = 412,468.20/x
  3. Step 3: Cross multiply
    1,086,647.40x = 1,628,804.70 × 412,468.20
  4. Step 4: Simplify right side
    1,086,647.40x = 671,830,142,760.54
  5. Step 5: Solve for x
    x = 671,830,142,760.54/1,086,647.40
  6. Step 6: Final answer
    x = 618,259.56

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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.