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Finding the Fourth Proportional to 630,687.60, 870,351.30 and 344,214

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Solution

The fourth proportional to 630,687.60, 870,351.30 and 344,214 is: 475,016.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,687.60 : 870,351.30 = 344,214 : x
  2. Step 2: Convert to fraction form
    630,687.60/870,351.30 = 344,214/x
  3. Step 3: Cross multiply
    630,687.60x = 870,351.30 × 344,214
  4. Step 4: Simplify right side
    630,687.60x = 299,587,102,378.20
  5. Step 5: Solve for x
    x = 299,587,102,378.20/630,687.60
  6. Step 6: Final answer
    x = 475,016.64

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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.