Home / 1,185,310.87-1,635,728.91-641,446.64

Finding the Fourth Proportional to 1,185,310.87, 1,635,728.91 and 641,446.64

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Solution

The fourth proportional to 1,185,310.87, 1,635,728.91 and 641,446.64 is: 885,196.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,310.87 : 1,635,728.91 = 641,446.64 : x
  2. Step 2: Convert to fraction form
    1,185,310.87/1,635,728.91 = 641,446.64/x
  3. Step 3: Cross multiply
    1,185,310.87x = 1,635,728.91 × 641,446.64
  4. Step 4: Simplify right side
    1,185,310.87x = 1,049,232,819,825.32
  5. Step 5: Solve for x
    x = 1,049,232,819,825.32/1,185,310.87
  6. Step 6: Final answer
    x = 885,196.32

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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.