Home / 811,643.56-1,216,673.82-338,464.36

Finding the Fourth Proportional to 811,643.56, 1,216,673.82 and 338,464.36

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Solution

The fourth proportional to 811,643.56, 1,216,673.82 and 338,464.36 is: 507,366.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,643.56 : 1,216,673.82 = 338,464.36 : x
  2. Step 2: Convert to fraction form
    811,643.56/1,216,673.82 = 338,464.36/x
  3. Step 3: Cross multiply
    811,643.56x = 1,216,673.82 × 338,464.36
  4. Step 4: Simplify right side
    811,643.56x = 411,800,725,815.06
  5. Step 5: Solve for x
    x = 411,800,725,815.06/811,643.56
  6. Step 6: Final answer
    x = 507,366.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.