Home / 812,008.47-1,120,558.08-449,424.63

Finding the Fourth Proportional to 812,008.47, 1,120,558.08 and 449,424.63

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Solution

The fourth proportional to 812,008.47, 1,120,558.08 and 449,424.63 is: 620,198.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,008.47 : 1,120,558.08 = 449,424.63 : x
  2. Step 2: Convert to fraction form
    812,008.47/1,120,558.08 = 449,424.63/x
  3. Step 3: Cross multiply
    812,008.47x = 1,120,558.08 × 449,424.63
  4. Step 4: Simplify right side
    812,008.47x = 503,606,400,497.51
  5. Step 5: Solve for x
    x = 503,606,400,497.51/812,008.47
  6. Step 6: Final answer
    x = 620,198.46

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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.