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Finding the Fourth Proportional to 631,162.62, 870,998.55 and 344,681.82

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Solution

The fourth proportional to 631,162.62, 870,998.55 and 344,681.82 is: 475,657.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,162.62 : 870,998.55 = 344,681.82 : x
  2. Step 2: Convert to fraction form
    631,162.62/870,998.55 = 344,681.82/x
  3. Step 3: Cross multiply
    631,162.62x = 870,998.55 × 344,681.82
  4. Step 4: Simplify right side
    631,162.62x = 300,217,365,431.36
  5. Step 5: Solve for x
    x = 300,217,365,431.36/631,162.62
  6. Step 6: Final answer
    x = 475,657.71

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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.