Home / 1,285,893.60-1,928,111.40-487,201.20

Finding the Fourth Proportional to 1,285,893.60, 1,928,111.40 and 487,201.20

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Solution

The fourth proportional to 1,285,893.60, 1,928,111.40 and 487,201.20 is: 730,525.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,893.60 : 1,928,111.40 = 487,201.20 : x
  2. Step 2: Convert to fraction form
    1,285,893.60/1,928,111.40 = 487,201.20/x
  3. Step 3: Cross multiply
    1,285,893.60x = 1,928,111.40 × 487,201.20
  4. Step 4: Simplify right side
    1,285,893.60x = 939,378,187,813.68
  5. Step 5: Solve for x
    x = 939,378,187,813.68/1,285,893.60
  6. Step 6: Final answer
    x = 730,525.60

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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.