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Finding the Fourth Proportional to 455,554, 628,703.40 and 254,388.88

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Solution

The fourth proportional to 455,554, 628,703.40 and 254,388.88 is: 351,078.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,554 : 628,703.40 = 254,388.88 : x
  2. Step 2: Convert to fraction form
    455,554/628,703.40 = 254,388.88/x
  3. Step 3: Cross multiply
    455,554x = 628,703.40 × 254,388.88
  4. Step 4: Simplify right side
    455,554x = 159,935,153,778.19
  5. Step 5: Solve for x
    x = 159,935,153,778.19/455,554
  6. Step 6: Final answer
    x = 351,078.37

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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.