Home / 1,261,203.88-1,740,498.24-688,280.80

Finding the Fourth Proportional to 1,261,203.88, 1,740,498.24 and 688,280.80

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Solution

The fourth proportional to 1,261,203.88, 1,740,498.24 and 688,280.80 is: 949,847.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,203.88 : 1,740,498.24 = 688,280.80 : x
  2. Step 2: Convert to fraction form
    1,261,203.88/1,740,498.24 = 688,280.80/x
  3. Step 3: Cross multiply
    1,261,203.88x = 1,740,498.24 × 688,280.80
  4. Step 4: Simplify right side
    1,261,203.88x = 1,197,951,521,025.79
  5. Step 5: Solve for x
    x = 1,197,951,521,025.79/1,261,203.88
  6. Step 6: Final answer
    x = 949,847.63

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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.