Home / 1,185,215.99-1,635,602.40-641,351.78

Finding the Fourth Proportional to 1,185,215.99, 1,635,602.40 and 641,351.78

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Solution

The fourth proportional to 1,185,215.99, 1,635,602.40 and 641,351.78 is: 885,067.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,215.99 : 1,635,602.40 = 641,351.78 : x
  2. Step 2: Convert to fraction form
    1,185,215.99/1,635,602.40 = 641,351.78/x
  3. Step 3: Cross multiply
    1,185,215.99x = 1,635,602.40 × 641,351.78
  4. Step 4: Simplify right side
    1,185,215.99x = 1,048,996,510,612.27
  5. Step 5: Solve for x
    x = 1,048,996,510,612.27/1,185,215.99
  6. Step 6: Final answer
    x = 885,067.80

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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.