Home / 778,519.94-1,074,389.38-491,935.46

Finding the Fourth Proportional to 778,519.94, 1,074,389.38 and 491,935.46

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Solution

The fourth proportional to 778,519.94, 1,074,389.38 and 491,935.46 is: 678,891.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,519.94 : 1,074,389.38 = 491,935.46 : x
  2. Step 2: Convert to fraction form
    778,519.94/1,074,389.38 = 491,935.46/x
  3. Step 3: Cross multiply
    778,519.94x = 1,074,389.38 × 491,935.46
  4. Step 4: Simplify right side
    778,519.94x = 528,530,233,869.42
  5. Step 5: Solve for x
    x = 528,530,233,869.42/778,519.94
  6. Step 6: Final answer
    x = 678,891.07

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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.