Home / 768,438.26-1,060,455.72-428,906.50

Finding the Fourth Proportional to 768,438.26, 1,060,455.72 and 428,906.50

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Solution

The fourth proportional to 768,438.26, 1,060,455.72 and 428,906.50 is: 591,897.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,438.26 : 1,060,455.72 = 428,906.50 : x
  2. Step 2: Convert to fraction form
    768,438.26/1,060,455.72 = 428,906.50/x
  3. Step 3: Cross multiply
    768,438.26x = 1,060,455.72 × 428,906.50
  4. Step 4: Simplify right side
    768,438.26x = 454,836,351,270.18
  5. Step 5: Solve for x
    x = 454,836,351,270.18/768,438.26
  6. Step 6: Final answer
    x = 591,897.07

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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.