Home / 1,185,279.68-1,635,685.92-641,415.47

Finding the Fourth Proportional to 1,185,279.68, 1,635,685.92 and 641,415.47

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Solution

The fourth proportional to 1,185,279.68, 1,635,685.92 and 641,415.47 is: 885,153.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,279.68 : 1,635,685.92 = 641,415.47 : x
  2. Step 2: Convert to fraction form
    1,185,279.68/1,635,685.92 = 641,415.47/x
  3. Step 3: Cross multiply
    1,185,279.68x = 1,635,685.92 × 641,415.47
  4. Step 4: Simplify right side
    1,185,279.68x = 1,049,154,244,970.75
  5. Step 5: Solve for x
    x = 1,049,154,244,970.75/1,185,279.68
  6. Step 6: Final answer
    x = 885,153.32

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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.