Home / 1,261,201.88-1,740,495.48-688,278.80

Finding the Fourth Proportional to 1,261,201.88, 1,740,495.48 and 688,278.80

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Solution

The fourth proportional to 1,261,201.88, 1,740,495.48 and 688,278.80 is: 949,844.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,201.88 : 1,740,495.48 = 688,278.80 : x
  2. Step 2: Convert to fraction form
    1,261,201.88/1,740,495.48 = 688,278.80/x
  3. Step 3: Cross multiply
    1,261,201.88x = 1,740,495.48 × 688,278.80
  4. Step 4: Simplify right side
    1,261,201.88x = 1,197,946,140,379.82
  5. Step 5: Solve for x
    x = 1,197,946,140,379.82/1,261,201.88
  6. Step 6: Final answer
    x = 949,844.87

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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.