Home / 1,222,761.21-1,687,463.24-678,897.03

Finding the Fourth Proportional to 1,222,761.21, 1,687,463.24 and 678,897.03

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Solution

The fourth proportional to 1,222,761.21, 1,687,463.24 and 678,897.03 is: 936,907.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,761.21 : 1,687,463.24 = 678,897.03 : x
  2. Step 2: Convert to fraction form
    1,222,761.21/1,687,463.24 = 678,897.03/x
  3. Step 3: Cross multiply
    1,222,761.21x = 1,687,463.24 × 678,897.03
  4. Step 4: Simplify right side
    1,222,761.21x = 1,145,613,781,870.18
  5. Step 5: Solve for x
    x = 1,145,613,781,870.18/1,222,761.21
  6. Step 6: Final answer
    x = 936,907.20

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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.