Home / 1,222,038.70-1,686,414.33-678,174.86

Finding the Fourth Proportional to 1,222,038.70, 1,686,414.33 and 678,174.86

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Solution

The fourth proportional to 1,222,038.70, 1,686,414.33 and 678,174.86 is: 935,881.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,038.70 : 1,686,414.33 = 678,174.86 : x
  2. Step 2: Convert to fraction form
    1,222,038.70/1,686,414.33 = 678,174.86/x
  3. Step 3: Cross multiply
    1,222,038.70x = 1,686,414.33 × 678,174.86
  4. Step 4: Simplify right side
    1,222,038.70x = 1,143,683,806,365.78
  5. Step 5: Solve for x
    x = 1,143,683,806,365.78/1,222,038.70
  6. Step 6: Final answer
    x = 935,881.82

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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.