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Finding the Fourth Proportional to 427,554.78, 590,374.38 and 274,668.90

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Solution

The fourth proportional to 427,554.78, 590,374.38 and 274,668.90 is: 379,267.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,554.78 : 590,374.38 = 274,668.90 : x
  2. Step 2: Convert to fraction form
    427,554.78/590,374.38 = 274,668.90/x
  3. Step 3: Cross multiply
    427,554.78x = 590,374.38 × 274,668.90
  4. Step 4: Simplify right side
    427,554.78x = 162,157,481,542.78
  5. Step 5: Solve for x
    x = 162,157,481,542.78/427,554.78
  6. Step 6: Final answer
    x = 379,267.15

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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.