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Finding the Fourth Proportional to 427,457.44, 641,920.44 and 379,533.97

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Solution

The fourth proportional to 427,457.44, 641,920.44 and 379,533.97 is: 569,952.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,457.44 : 641,920.44 = 379,533.97 : x
  2. Step 2: Convert to fraction form
    427,457.44/641,920.44 = 379,533.97/x
  3. Step 3: Cross multiply
    427,457.44x = 641,920.44 × 379,533.97
  4. Step 4: Simplify right side
    427,457.44x = 243,630,613,017.35
  5. Step 5: Solve for x
    x = 243,630,613,017.35/427,457.44
  6. Step 6: Final answer
    x = 569,952.91

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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.