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Finding the Fourth Proportional to 630,654.54, 870,305.70 and 344,181

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Solution

The fourth proportional to 630,654.54, 870,305.70 and 344,181 is: 474,971.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,654.54 : 870,305.70 = 344,181 : x
  2. Step 2: Convert to fraction form
    630,654.54/870,305.70 = 344,181/x
  3. Step 3: Cross multiply
    630,654.54x = 870,305.70 × 344,181
  4. Step 4: Simplify right side
    630,654.54x = 299,542,686,131.70
  5. Step 5: Solve for x
    x = 299,542,686,131.70/630,654.54
  6. Step 6: Final answer
    x = 474,971.11

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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.