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Finding the Fourth Proportional to 394,687.02, 544,247.52 and 318,125.64

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Solution

The fourth proportional to 394,687.02, 544,247.52 and 318,125.64 is: 438,674.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,687.02 : 544,247.52 = 318,125.64 : x
  2. Step 2: Convert to fraction form
    394,687.02/544,247.52 = 318,125.64/x
  3. Step 3: Cross multiply
    394,687.02x = 544,247.52 × 318,125.64
  4. Step 4: Simplify right side
    394,687.02x = 173,139,090,618.41
  5. Step 5: Solve for x
    x = 173,139,090,618.41/394,687.02
  6. Step 6: Final answer
    x = 438,674.40

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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.