Home / 1,222,724.42-1,687,281.63-678,860.07

Finding the Fourth Proportional to 1,222,724.42, 1,687,281.63 and 678,860.07

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Solution

The fourth proportional to 1,222,724.42, 1,687,281.63 and 678,860.07 is: 936,783.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,724.42 : 1,687,281.63 = 678,860.07 : x
  2. Step 2: Convert to fraction form
    1,222,724.42/1,687,281.63 = 678,860.07/x
  3. Step 3: Cross multiply
    1,222,724.42x = 1,687,281.63 × 678,860.07
  4. Step 4: Simplify right side
    1,222,724.42x = 1,145,428,125,451.51
  5. Step 5: Solve for x
    x = 1,145,428,125,451.51/1,222,724.42
  6. Step 6: Final answer
    x = 936,783.55

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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.