Home / 764,444.72-1,054,934.34-420,286.48

Finding the Fourth Proportional to 764,444.72, 1,054,934.34 and 420,286.48

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Solution

The fourth proportional to 764,444.72, 1,054,934.34 and 420,286.48 is: 579,995.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,444.72 : 1,054,934.34 = 420,286.48 : x
  2. Step 2: Convert to fraction form
    764,444.72/1,054,934.34 = 420,286.48/x
  3. Step 3: Cross multiply
    764,444.72x = 1,054,934.34 × 420,286.48
  4. Step 4: Simplify right side
    764,444.72x = 443,374,640,389.72
  5. Step 5: Solve for x
    x = 443,374,640,389.72/764,444.72
  6. Step 6: Final answer
    x = 579,995.69

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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.