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Finding the Fourth Proportional to 544,415.87, 751,081.26 and 311,718.47

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Solution

The fourth proportional to 544,415.87, 751,081.26 and 311,718.47 is: 430,049.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,415.87 : 751,081.26 = 311,718.47 : x
  2. Step 2: Convert to fraction form
    544,415.87/751,081.26 = 311,718.47/x
  3. Step 3: Cross multiply
    544,415.87x = 751,081.26 × 311,718.47
  4. Step 4: Simplify right side
    544,415.87x = 234,125,897,457.47
  5. Step 5: Solve for x
    x = 234,125,897,457.47/544,415.87
  6. Step 6: Final answer
    x = 430,049.73

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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.