Home / 947,902.68-1,308,108.30-518,187.96

Finding the Fourth Proportional to 947,902.68, 1,308,108.30 and 518,187.96

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Solution

The fourth proportional to 947,902.68, 1,308,108.30 and 518,187.96 is: 715,100.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    947,902.68 : 1,308,108.30 = 518,187.96 : x
  2. Step 2: Convert to fraction form
    947,902.68/1,308,108.30 = 518,187.96/x
  3. Step 3: Cross multiply
    947,902.68x = 1,308,108.30 × 518,187.96
  4. Step 4: Simplify right side
    947,902.68x = 677,845,971,436.07
  5. Step 5: Solve for x
    x = 677,845,971,436.07/947,902.68
  6. Step 6: Final answer
    x = 715,100.81

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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.