Home / 1,222,240.05-1,686,678.48-678,380.54

Finding the Fourth Proportional to 1,222,240.05, 1,686,678.48 and 678,380.54

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Solution

The fourth proportional to 1,222,240.05, 1,686,678.48 and 678,380.54 is: 936,158.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,240.05 : 1,686,678.48 = 678,380.54 : x
  2. Step 2: Convert to fraction form
    1,222,240.05/1,686,678.48 = 678,380.54/x
  3. Step 3: Cross multiply
    1,222,240.05x = 1,686,678.48 × 678,380.54
  4. Step 4: Simplify right side
    1,222,240.05x = 1,144,209,849,635.39
  5. Step 5: Solve for x
    x = 1,144,209,849,635.39/1,222,240.05
  6. Step 6: Final answer
    x = 936,158.04

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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.