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Finding the Fourth Proportional to 631,740.56, 871,802.06 and 345,260.57

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Solution

The fourth proportional to 631,740.56, 871,802.06 and 345,260.57 is: 476,459.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,740.56 : 871,802.06 = 345,260.57 : x
  2. Step 2: Convert to fraction form
    631,740.56/871,802.06 = 345,260.57/x
  3. Step 3: Cross multiply
    631,740.56x = 871,802.06 × 345,260.57
  4. Step 4: Simplify right side
    631,740.56x = 300,998,870,077.46
  5. Step 5: Solve for x
    x = 300,998,870,077.46/631,740.56
  6. Step 6: Final answer
    x = 476,459.63

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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.