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Finding the Fourth Proportional to 630,835.44, 870,540.12 and 344,354.64

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Solution

The fourth proportional to 630,835.44, 870,540.12 and 344,354.64 is: 475,202.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,835.44 : 870,540.12 = 344,354.64 : x
  2. Step 2: Convert to fraction form
    630,835.44/870,540.12 = 344,354.64/x
  3. Step 3: Cross multiply
    630,835.44x = 870,540.12 × 344,354.64
  4. Step 4: Simplify right side
    630,835.44x = 299,774,529,628.16
  5. Step 5: Solve for x
    x = 299,774,529,628.16/630,835.44
  6. Step 6: Final answer
    x = 475,202.42

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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.