Home / 1,185,133.70-1,635,481.22-641,278.76

Finding the Fourth Proportional to 1,185,133.70, 1,635,481.22 and 641,278.76

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Solution

The fourth proportional to 1,185,133.70, 1,635,481.22 and 641,278.76 is: 884,962.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,133.70 : 1,635,481.22 = 641,278.76 : x
  2. Step 2: Convert to fraction form
    1,185,133.70/1,635,481.22 = 641,278.76/x
  3. Step 3: Cross multiply
    1,185,133.70x = 1,635,481.22 × 641,278.76
  4. Step 4: Simplify right side
    1,185,133.70x = 1,048,799,368,764.89
  5. Step 5: Solve for x
    x = 1,048,799,368,764.89/1,185,133.70
  6. Step 6: Final answer
    x = 884,962.91

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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.