Home / 1,222,182.89-1,686,587.02-678,287.09

Finding the Fourth Proportional to 1,222,182.89, 1,686,587.02 and 678,287.09

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Solution

The fourth proportional to 1,222,182.89, 1,686,587.02 and 678,287.09 is: 936,022.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,182.89 : 1,686,587.02 = 678,287.09 : x
  2. Step 2: Convert to fraction form
    1,222,182.89/1,686,587.02 = 678,287.09/x
  3. Step 3: Cross multiply
    1,222,182.89x = 1,686,587.02 × 678,287.09
  4. Step 4: Simplify right side
    1,222,182.89x = 1,143,990,203,500.46
  5. Step 5: Solve for x
    x = 1,143,990,203,500.46/1,222,182.89
  6. Step 6: Final answer
    x = 936,022.10

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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.