Home / 1,185,266.89-1,635,655.84-641,390.77

Finding the Fourth Proportional to 1,185,266.89, 1,635,655.84 and 641,390.77

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Solution

The fourth proportional to 1,185,266.89, 1,635,655.84 and 641,390.77 is: 885,112.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,266.89 : 1,635,655.84 = 641,390.77 : x
  2. Step 2: Convert to fraction form
    1,185,266.89/1,635,655.84 = 641,390.77/x
  3. Step 3: Cross multiply
    1,185,266.89x = 1,635,655.84 × 641,390.77
  4. Step 4: Simplify right side
    1,185,266.89x = 1,049,094,558,672.60
  5. Step 5: Solve for x
    x = 1,049,094,558,672.60/1,185,266.89
  6. Step 6: Final answer
    x = 885,112.52

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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.