Home / 768,187.20-1,059,992.40-428,589.60

Finding the Fourth Proportional to 768,187.20, 1,059,992.40 and 428,589.60

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Solution

The fourth proportional to 768,187.20, 1,059,992.40 and 428,589.60 is: 591,394.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,187.20 : 1,059,992.40 = 428,589.60 : x
  2. Step 2: Convert to fraction form
    768,187.20/1,059,992.40 = 428,589.60/x
  3. Step 3: Cross multiply
    768,187.20x = 1,059,992.40 × 428,589.60
  4. Step 4: Simplify right side
    768,187.20x = 454,301,718,719.04
  5. Step 5: Solve for x
    x = 454,301,718,719.04/768,187.20
  6. Step 6: Final answer
    x = 591,394.54

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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.