Home / 1,222,334.20-1,686,795.06-678,438.28

Finding the Fourth Proportional to 1,222,334.20, 1,686,795.06 and 678,438.28

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Solution

The fourth proportional to 1,222,334.20, 1,686,795.06 and 678,438.28 is: 936,230.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,334.20 : 1,686,795.06 = 678,438.28 : x
  2. Step 2: Convert to fraction form
    1,222,334.20/1,686,795.06 = 678,438.28/x
  3. Step 3: Cross multiply
    1,222,334.20x = 1,686,795.06 × 678,438.28
  4. Step 4: Simplify right side
    1,222,334.20x = 1,144,386,339,218.90
  5. Step 5: Solve for x
    x = 1,144,386,339,218.90/1,222,334.20
  6. Step 6: Final answer
    x = 936,230.32

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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.