Home / 1,185,206.85-1,635,589.78-641,342.64

Finding the Fourth Proportional to 1,185,206.85, 1,635,589.78 and 641,342.64

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Solution

The fourth proportional to 1,185,206.85, 1,635,589.78 and 641,342.64 is: 885,055.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,206.85 : 1,635,589.78 = 641,342.64 : x
  2. Step 2: Convert to fraction form
    1,185,206.85/1,635,589.78 = 641,342.64/x
  3. Step 3: Cross multiply
    1,185,206.85x = 1,635,589.78 × 641,342.64
  4. Step 4: Simplify right side
    1,185,206.85x = 1,048,973,464,976.60
  5. Step 5: Solve for x
    x = 1,048,973,464,976.60/1,185,206.85
  6. Step 6: Final answer
    x = 885,055.19

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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.