Home / 764,336.32-1,054,797.53-420,186.75

Finding the Fourth Proportional to 764,336.32, 1,054,797.53 and 420,186.75

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Solution

The fourth proportional to 764,336.32, 1,054,797.53 and 420,186.75 is: 579,865.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,336.32 : 1,054,797.53 = 420,186.75 : x
  2. Step 2: Convert to fraction form
    764,336.32/1,054,797.53 = 420,186.75/x
  3. Step 3: Cross multiply
    764,336.32x = 1,054,797.53 × 420,186.75
  4. Step 4: Simplify right side
    764,336.32x = 443,211,943,937.79
  5. Step 5: Solve for x
    x = 443,211,943,937.79/764,336.32
  6. Step 6: Final answer
    x = 579,865.09

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Double scale
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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.