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Finding the Fourth Proportional to 630,942.65, 870,660.31 and 344,462.12

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Solution

The fourth proportional to 630,942.65, 870,660.31 and 344,462.12 is: 475,335.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,942.65 : 870,660.31 = 344,462.12 : x
  2. Step 2: Convert to fraction form
    630,942.65/870,660.31 = 344,462.12/x
  3. Step 3: Cross multiply
    630,942.65x = 870,660.31 × 344,462.12
  4. Step 4: Simplify right side
    630,942.65x = 299,909,496,182.46
  5. Step 5: Solve for x
    x = 299,909,496,182.46/630,942.65
  6. Step 6: Final answer
    x = 475,335.59

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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.