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Finding the Fourth Proportional to 571,691.10, 788,876.80 and 330,051.66

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Solution

The fourth proportional to 571,691.10, 788,876.80 and 330,051.66 is: 455,438.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,691.10 : 788,876.80 = 330,051.66 : x
  2. Step 2: Convert to fraction form
    571,691.10/788,876.80 = 330,051.66/x
  3. Step 3: Cross multiply
    571,691.10x = 788,876.80 × 330,051.66
  4. Step 4: Simplify right side
    571,691.10x = 260,370,097,375.49
  5. Step 5: Solve for x
    x = 260,370,097,375.49/571,691.10
  6. Step 6: Final answer
    x = 455,438.43

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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.