Home / 1,138,690.45-1,571,392.56-622,446.40

Finding the Fourth Proportional to 1,138,690.45, 1,571,392.56 and 622,446.40

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Solution

The fourth proportional to 1,138,690.45, 1,571,392.56 and 622,446.40 is: 858,975.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,690.45 : 1,571,392.56 = 622,446.40 : x
  2. Step 2: Convert to fraction form
    1,138,690.45/1,571,392.56 = 622,446.40/x
  3. Step 3: Cross multiply
    1,138,690.45x = 1,571,392.56 × 622,446.40
  4. Step 4: Simplify right side
    1,138,690.45x = 978,107,641,958.78
  5. Step 5: Solve for x
    x = 978,107,641,958.78/1,138,690.45
  6. Step 6: Final answer
    x = 858,975.89

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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.