Home / 1,419,628.40-2,129,442.60-422,356.40

Finding the Fourth Proportional to 1,419,628.40, 2,129,442.60 and 422,356.40

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Solution

The fourth proportional to 1,419,628.40, 2,129,442.60 and 422,356.40 is: 633,534.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,419,628.40 : 2,129,442.60 = 422,356.40 : x
  2. Step 2: Convert to fraction form
    1,419,628.40/2,129,442.60 = 422,356.40/x
  3. Step 3: Cross multiply
    1,419,628.40x = 2,129,442.60 × 422,356.40
  4. Step 4: Simplify right side
    1,419,628.40x = 899,383,710,542.64
  5. Step 5: Solve for x
    x = 899,383,710,542.64/1,419,628.40
  6. Step 6: Final answer
    x = 633,534.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.