Home / 678,571.68-1,017,558.53-318,844.88

Finding the Fourth Proportional to 678,571.68, 1,017,558.53 and 318,844.88

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Solution

The fourth proportional to 678,571.68, 1,017,558.53 and 318,844.88 is: 478,126.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,571.68 : 1,017,558.53 = 318,844.88 : x
  2. Step 2: Convert to fraction form
    678,571.68/1,017,558.53 = 318,844.88/x
  3. Step 3: Cross multiply
    678,571.68x = 1,017,558.53 × 318,844.88
  4. Step 4: Simplify right side
    678,571.68x = 324,443,327,390.83
  5. Step 5: Solve for x
    x = 324,443,327,390.83/678,571.68
  6. Step 6: Final answer
    x = 478,126.83

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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.