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Finding the Fourth Proportional to 422,813.68, 583,144.04 and 371,717.84

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Solution

The fourth proportional to 422,813.68, 583,144.04 and 371,717.84 is: 512,672.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,813.68 : 583,144.04 = 371,717.84 : x
  2. Step 2: Convert to fraction form
    422,813.68/583,144.04 = 371,717.84/x
  3. Step 3: Cross multiply
    422,813.68x = 583,144.04 × 371,717.84
  4. Step 4: Simplify right side
    422,813.68x = 216,765,042,957.67
  5. Step 5: Solve for x
    x = 216,765,042,957.67/422,813.68
  6. Step 6: Final answer
    x = 512,672.73

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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.