Home / 1,222,333.20-1,686,793.68-678,437.28

Finding the Fourth Proportional to 1,222,333.20, 1,686,793.68 and 678,437.28

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Solution

The fourth proportional to 1,222,333.20, 1,686,793.68 and 678,437.28 is: 936,228.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,333.20 : 1,686,793.68 = 678,437.28 : x
  2. Step 2: Convert to fraction form
    1,222,333.20/1,686,793.68 = 678,437.28/x
  3. Step 3: Cross multiply
    1,222,333.20x = 1,686,793.68 × 678,437.28
  4. Step 4: Simplify right side
    1,222,333.20x = 1,144,383,716,180.39
  5. Step 5: Solve for x
    x = 1,144,383,716,180.39/1,222,333.20
  6. Step 6: Final answer
    x = 936,228.94

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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.