Home / 1,222,220.76-1,686,682.62-678,391.44

Finding the Fourth Proportional to 1,222,220.76, 1,686,682.62 and 678,391.44

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Solution

The fourth proportional to 1,222,220.76, 1,686,682.62 and 678,391.44 is: 936,190.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,220.76 : 1,686,682.62 = 678,391.44 : x
  2. Step 2: Convert to fraction form
    1,222,220.76/1,686,682.62 = 678,391.44/x
  3. Step 3: Cross multiply
    1,222,220.76x = 1,686,682.62 × 678,391.44
  4. Step 4: Simplify right side
    1,222,220.76x = 1,144,231,051,404.77
  5. Step 5: Solve for x
    x = 1,144,231,051,404.77/1,222,220.76
  6. Step 6: Final answer
    x = 936,190.16

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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.