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Finding the Fourth Proportional to 631,162.12, 870,997.86 and 344,681.32

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Solution

The fourth proportional to 631,162.12, 870,997.86 and 344,681.32 is: 475,657.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,162.12 : 870,997.86 = 344,681.32 : x
  2. Step 2: Convert to fraction form
    631,162.12/870,997.86 = 344,681.32/x
  3. Step 3: Cross multiply
    631,162.12x = 870,997.86 × 344,681.32
  4. Step 4: Simplify right side
    631,162.12x = 300,216,692,101.98
  5. Step 5: Solve for x
    x = 300,216,692,101.98/631,162.12
  6. Step 6: Final answer
    x = 475,657.02

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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.