Home / 1,222,731.14-1,687,412.39-678,875.49

Finding the Fourth Proportional to 1,222,731.14, 1,687,412.39 and 678,875.49

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Solution

The fourth proportional to 1,222,731.14, 1,687,412.39 and 678,875.49 is: 936,872.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,731.14 : 1,687,412.39 = 678,875.49 : x
  2. Step 2: Convert to fraction form
    1,222,731.14/1,687,412.39 = 678,875.49/x
  3. Step 3: Cross multiply
    1,222,731.14x = 1,687,412.39 × 678,875.49
  4. Step 4: Simplify right side
    1,222,731.14x = 1,145,542,909,698.94
  5. Step 5: Solve for x
    x = 1,145,542,909,698.94/1,222,731.14
  6. Step 6: Final answer
    x = 936,872.28

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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.