Home / 1,261,307-1,740,640.56-688,383.92

Finding the Fourth Proportional to 1,261,307, 1,740,640.56 and 688,383.92

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Solution

The fourth proportional to 1,261,307, 1,740,640.56 and 688,383.92 is: 949,989.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,307 : 1,740,640.56 = 688,383.92 : x
  2. Step 2: Convert to fraction form
    1,261,307/1,740,640.56 = 688,383.92/x
  3. Step 3: Cross multiply
    1,261,307x = 1,740,640.56 × 688,383.92
  4. Step 4: Simplify right side
    1,261,307x = 1,198,228,972,003.80
  5. Step 5: Solve for x
    x = 1,198,228,972,003.80/1,261,307
  6. Step 6: Final answer
    x = 949,989.95

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1.5x scale

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.