Home / 858,488.58-1,287,760.32-431,791.52

Finding the Fourth Proportional to 858,488.58, 1,287,760.32 and 431,791.52

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Solution

The fourth proportional to 858,488.58, 1,287,760.32 and 431,791.52 is: 647,701.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,488.58 : 1,287,760.32 = 431,791.52 : x
  2. Step 2: Convert to fraction form
    858,488.58/1,287,760.32 = 431,791.52/x
  3. Step 3: Cross multiply
    858,488.58x = 1,287,760.32 × 431,791.52
  4. Step 4: Simplify right side
    858,488.58x = 556,043,985,968.49
  5. Step 5: Solve for x
    x = 556,043,985,968.49/858,488.58
  6. Step 6: Final answer
    x = 647,701.09

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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.