Home / 1,185,306.48-1,635,722.84-641,442.20

Finding the Fourth Proportional to 1,185,306.48, 1,635,722.84 and 641,442.20

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Solution

The fourth proportional to 1,185,306.48, 1,635,722.84 and 641,442.20 is: 885,190.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,306.48 : 1,635,722.84 = 641,442.20 : x
  2. Step 2: Convert to fraction form
    1,185,306.48/1,635,722.84 = 641,442.20/x
  3. Step 3: Cross multiply
    1,185,306.48x = 1,635,722.84 × 641,442.20
  4. Step 4: Simplify right side
    1,185,306.48x = 1,049,221,657,079.85
  5. Step 5: Solve for x
    x = 1,049,221,657,079.85/1,185,306.48
  6. Step 6: Final answer
    x = 885,190.18

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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.