Home / 1,261,257-1,740,571.38-688,333.80

Finding the Fourth Proportional to 1,261,257, 1,740,571.38 and 688,333.80

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Solution

The fourth proportional to 1,261,257, 1,740,571.38 and 688,333.80 is: 949,920.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,257 : 1,740,571.38 = 688,333.80 : x
  2. Step 2: Convert to fraction form
    1,261,257/1,740,571.38 = 688,333.80/x
  3. Step 3: Cross multiply
    1,261,257x = 1,740,571.38 × 688,333.80
  4. Step 4: Simplify right side
    1,261,257x = 1,198,094,112,166.64
  5. Step 5: Solve for x
    x = 1,198,094,112,166.64/1,261,257
  6. Step 6: Final answer
    x = 949,920.68

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Double scale
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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.