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Finding the Fourth Proportional to 411,076.35, 615,119.85 and 339,331.82

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Solution

The fourth proportional to 411,076.35, 615,119.85 and 339,331.82 is: 507,763.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,076.35 : 615,119.85 = 339,331.82 : x
  2. Step 2: Convert to fraction form
    411,076.35/615,119.85 = 339,331.82/x
  3. Step 3: Cross multiply
    411,076.35x = 615,119.85 × 339,331.82
  4. Step 4: Simplify right side
    411,076.35x = 208,729,738,218.63
  5. Step 5: Solve for x
    x = 208,729,738,218.63/411,076.35
  6. Step 6: Final answer
    x = 507,763.92

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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.