Home / 698,871.75-964,433.79-388,771.25

Finding the Fourth Proportional to 698,871.75, 964,433.79 and 388,771.25

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Solution

The fourth proportional to 698,871.75, 964,433.79 and 388,771.25 is: 536,499.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,871.75 : 964,433.79 = 388,771.25 : x
  2. Step 2: Convert to fraction form
    698,871.75/964,433.79 = 388,771.25/x
  3. Step 3: Cross multiply
    698,871.75x = 964,433.79 × 388,771.25
  4. Step 4: Simplify right side
    698,871.75x = 374,944,125,258.37
  5. Step 5: Solve for x
    x = 374,944,125,258.37/698,871.75
  6. Step 6: Final answer
    x = 536,499.19

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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.