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Finding the Fourth Proportional to 479,425.55, 661,720.48 and 275,594.72

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Solution

The fourth proportional to 479,425.55, 661,720.48 and 275,594.72 is: 380,385.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,425.55 : 661,720.48 = 275,594.72 : x
  2. Step 2: Convert to fraction form
    479,425.55/661,720.48 = 275,594.72/x
  3. Step 3: Cross multiply
    479,425.55x = 661,720.48 × 275,594.72
  4. Step 4: Simplify right side
    479,425.55x = 182,366,666,406.28
  5. Step 5: Solve for x
    x = 182,366,666,406.28/479,425.55
  6. Step 6: Final answer
    x = 380,385.79

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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.