Home / 1,187,157.78-1,638,308.16-677,907.54

Finding the Fourth Proportional to 1,187,157.78, 1,638,308.16 and 677,907.54

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Solution

The fourth proportional to 1,187,157.78, 1,638,308.16 and 677,907.54 is: 935,529.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,157.78 : 1,638,308.16 = 677,907.54 : x
  2. Step 2: Convert to fraction form
    1,187,157.78/1,638,308.16 = 677,907.54/x
  3. Step 3: Cross multiply
    1,187,157.78x = 1,638,308.16 × 677,907.54
  4. Step 4: Simplify right side
    1,187,157.78x = 1,110,621,454,507.53
  5. Step 5: Solve for x
    x = 1,110,621,454,507.53/1,187,157.78
  6. Step 6: Final answer
    x = 935,529.78

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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.