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Finding the Fourth Proportional to 646,350.88, 891,930.04 and 370,694.50

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Solution

The fourth proportional to 646,350.88, 891,930.04 and 370,694.50 is: 511,538.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,350.88 : 891,930.04 = 370,694.50 : x
  2. Step 2: Convert to fraction form
    646,350.88/891,930.04 = 370,694.50/x
  3. Step 3: Cross multiply
    646,350.88x = 891,930.04 × 370,694.50
  4. Step 4: Simplify right side
    646,350.88x = 330,633,560,212.78
  5. Step 5: Solve for x
    x = 330,633,560,212.78/646,350.88
  6. Step 6: Final answer
    x = 511,538.81

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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.