Home / 1,261,071.78-1,740,321.09-688,143.42

Finding the Fourth Proportional to 1,261,071.78, 1,740,321.09 and 688,143.42

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Solution

The fourth proportional to 1,261,071.78, 1,740,321.09 and 688,143.42 is: 949,660.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,071.78 : 1,740,321.09 = 688,143.42 : x
  2. Step 2: Convert to fraction form
    1,261,071.78/1,740,321.09 = 688,143.42/x
  3. Step 3: Cross multiply
    1,261,071.78x = 1,740,321.09 × 688,143.42
  4. Step 4: Simplify right side
    1,261,071.78x = 1,197,590,506,770.73
  5. Step 5: Solve for x
    x = 1,197,590,506,770.73/1,261,071.78
  6. Step 6: Final answer
    x = 949,660.86

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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.