Home / 1,185,278.65-1,635,684.50-641,414.43

Finding the Fourth Proportional to 1,185,278.65, 1,635,684.50 and 641,414.43

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Solution

The fourth proportional to 1,185,278.65, 1,635,684.50 and 641,414.43 is: 885,151.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,278.65 : 1,635,684.50 = 641,414.43 : x
  2. Step 2: Convert to fraction form
    1,185,278.65/1,635,684.50 = 641,414.43/x
  3. Step 3: Cross multiply
    1,185,278.65x = 1,635,684.50 × 641,414.43
  4. Step 4: Simplify right side
    1,185,278.65x = 1,049,151,648,964.69
  5. Step 5: Solve for x
    x = 1,049,151,648,964.69/1,185,278.65
  6. Step 6: Final answer
    x = 885,151.90

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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.