Home / 764,310.77-1,054,762.05-420,161.21

Finding the Fourth Proportional to 764,310.77, 1,054,762.05 and 420,161.21

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Solution

The fourth proportional to 764,310.77, 1,054,762.05 and 420,161.21 is: 579,829.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,310.77 : 1,054,762.05 = 420,161.21 : x
  2. Step 2: Convert to fraction form
    764,310.77/1,054,762.05 = 420,161.21/x
  3. Step 3: Cross multiply
    764,310.77x = 1,054,762.05 × 420,161.21
  4. Step 4: Simplify right side
    764,310.77x = 443,170,099,447.23
  5. Step 5: Solve for x
    x = 443,170,099,447.23/764,310.77
  6. Step 6: Final answer
    x = 579,829.72

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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.