Home / 768,419.72-1,060,321.38-428,902.28

Finding the Fourth Proportional to 768,419.72, 1,060,321.38 and 428,902.28

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Solution

The fourth proportional to 768,419.72, 1,060,321.38 and 428,902.28 is: 591,830.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,419.72 : 1,060,321.38 = 428,902.28 : x
  2. Step 2: Convert to fraction form
    768,419.72/1,060,321.38 = 428,902.28/x
  3. Step 3: Cross multiply
    768,419.72x = 1,060,321.38 × 428,902.28
  4. Step 4: Simplify right side
    768,419.72x = 454,774,257,414.75
  5. Step 5: Solve for x
    x = 454,774,257,414.75/768,419.72
  6. Step 6: Final answer
    x = 591,830.54

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1.5x scale

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.