Home / 1,261,116.40-1,740,307.80-688,163.44

Finding the Fourth Proportional to 1,261,116.40, 1,740,307.80 and 688,163.44

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Solution

The fourth proportional to 1,261,116.40, 1,740,307.80 and 688,163.44 is: 949,647.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,116.40 : 1,740,307.80 = 688,163.44 : x
  2. Step 2: Convert to fraction form
    1,261,116.40/1,740,307.80 = 688,163.44/x
  3. Step 3: Cross multiply
    1,261,116.40x = 1,740,307.80 × 688,163.44
  4. Step 4: Simplify right side
    1,261,116.40x = 1,197,616,202,306.83
  5. Step 5: Solve for x
    x = 1,197,616,202,306.83/1,261,116.40
  6. Step 6: Final answer
    x = 949,647.63

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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.