Home / 811,433.78-1,217,261.37-338,008.41

Finding the Fourth Proportional to 811,433.78, 1,217,261.37 and 338,008.41

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Solution

The fourth proportional to 811,433.78, 1,217,261.37 and 338,008.41 is: 507,058.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,433.78 : 1,217,261.37 = 338,008.41 : x
  2. Step 2: Convert to fraction form
    811,433.78/1,217,261.37 = 338,008.41/x
  3. Step 3: Cross multiply
    811,433.78x = 1,217,261.37 × 338,008.41
  4. Step 4: Simplify right side
    811,433.78x = 411,444,580,228.12
  5. Step 5: Solve for x
    x = 411,444,580,228.12/811,433.78
  6. Step 6: Final answer
    x = 507,058.73

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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.