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Finding the Fourth Proportional to 422,446.39, 581,747.47 and 395,431.47

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Solution

The fourth proportional to 422,446.39, 581,747.47 and 395,431.47 is: 544,545.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,446.39 : 581,747.47 = 395,431.47 : x
  2. Step 2: Convert to fraction form
    422,446.39/581,747.47 = 395,431.47/x
  3. Step 3: Cross multiply
    422,446.39x = 581,747.47 × 395,431.47
  4. Step 4: Simplify right side
    422,446.39x = 230,041,256,242.30
  5. Step 5: Solve for x
    x = 230,041,256,242.30/422,446.39
  6. Step 6: Final answer
    x = 544,545.45

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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.