Home / 1,222,215.84-1,686,632.49-678,319.74

Finding the Fourth Proportional to 1,222,215.84, 1,686,632.49 and 678,319.74

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Solution

The fourth proportional to 1,222,215.84, 1,686,632.49 and 678,319.74 is: 936,067.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,215.84 : 1,686,632.49 = 678,319.74 : x
  2. Step 2: Convert to fraction form
    1,222,215.84/1,686,632.49 = 678,319.74/x
  3. Step 3: Cross multiply
    1,222,215.84x = 1,686,632.49 × 678,319.74
  4. Step 4: Simplify right side
    1,222,215.84x = 1,144,076,112,092.35
  5. Step 5: Solve for x
    x = 1,144,076,112,092.35/1,222,215.84
  6. Step 6: Final answer
    x = 936,067.16

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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.