Home / 1,221,504.14-1,685,680-677,650.70

Finding the Fourth Proportional to 1,221,504.14, 1,685,680 and 677,650.70

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Solution

The fourth proportional to 1,221,504.14, 1,685,680 and 677,650.70 is: 935,160.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,504.14 : 1,685,680 = 677,650.70 : x
  2. Step 2: Convert to fraction form
    1,221,504.14/1,685,680 = 677,650.70/x
  3. Step 3: Cross multiply
    1,221,504.14x = 1,685,680 × 677,650.70
  4. Step 4: Simplify right side
    1,221,504.14x = 1,142,302,231,976
  5. Step 5: Solve for x
    x = 1,142,302,231,976/1,221,504.14
  6. Step 6: Final answer
    x = 935,160.34

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Half scale
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Double scale
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Similar ratio
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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.