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Finding the Fourth Proportional to 455,673.60, 629,663.04 and 395,049.60

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Solution

The fourth proportional to 455,673.60, 629,663.04 and 395,049.60 is: 545,891.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,673.60 : 629,663.04 = 395,049.60 : x
  2. Step 2: Convert to fraction form
    455,673.60/629,663.04 = 395,049.60/x
  3. Step 3: Cross multiply
    455,673.60x = 629,663.04 × 395,049.60
  4. Step 4: Simplify right side
    455,673.60x = 248,748,132,086.78
  5. Step 5: Solve for x
    x = 248,748,132,086.78/455,673.60
  6. Step 6: Final answer
    x = 545,891.03

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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.