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Finding the Fourth Proportional to 687,750.32, 949,163.64 and 385,945.52

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Solution

The fourth proportional to 687,750.32, 949,163.64 and 385,945.52 is: 532,643.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,750.32 : 949,163.64 = 385,945.52 : x
  2. Step 2: Convert to fraction form
    687,750.32/949,163.64 = 385,945.52/x
  3. Step 3: Cross multiply
    687,750.32x = 949,163.64 × 385,945.52
  4. Step 4: Simplify right side
    687,750.32x = 366,325,454,604.89
  5. Step 5: Solve for x
    x = 366,325,454,604.89/687,750.32
  6. Step 6: Final answer
    x = 532,643.09

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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.