Home / 678,964.22-1,018,439.85-412,798.22

Finding the Fourth Proportional to 678,964.22, 1,018,439.85 and 412,798.22

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Solution

The fourth proportional to 678,964.22, 1,018,439.85 and 412,798.22 is: 619,193.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,964.22 : 1,018,439.85 = 412,798.22 : x
  2. Step 2: Convert to fraction form
    678,964.22/1,018,439.85 = 412,798.22/x
  3. Step 3: Cross multiply
    678,964.22x = 1,018,439.85 × 412,798.22
  4. Step 4: Simplify right side
    678,964.22x = 420,410,157,257.07
  5. Step 5: Solve for x
    x = 420,410,157,257.07/678,964.22
  6. Step 6: Final answer
    x = 619,193.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.