Home / 851,973.40-1,278,996.90-431,032.60

Finding the Fourth Proportional to 851,973.40, 1,278,996.90 and 431,032.60

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Solution

The fourth proportional to 851,973.40, 1,278,996.90 and 431,032.60 is: 647,073.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,973.40 : 1,278,996.90 = 431,032.60 : x
  2. Step 2: Convert to fraction form
    851,973.40/1,278,996.90 = 431,032.60/x
  3. Step 3: Cross multiply
    851,973.40x = 1,278,996.90 × 431,032.60
  4. Step 4: Simplify right side
    851,973.40x = 551,289,359,198.94
  5. Step 5: Solve for x
    x = 551,289,359,198.94/851,973.40
  6. Step 6: Final answer
    x = 647,073.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.