Home / 856,345.72-1,284,208.53-287,556.70

Finding the Fourth Proportional to 856,345.72, 1,284,208.53 and 287,556.70

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Solution

The fourth proportional to 856,345.72, 1,284,208.53 and 287,556.70 is: 431,230.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,345.72 : 1,284,208.53 = 287,556.70 : x
  2. Step 2: Convert to fraction form
    856,345.72/1,284,208.53 = 287,556.70/x
  3. Step 3: Cross multiply
    856,345.72x = 1,284,208.53 × 287,556.70
  4. Step 4: Simplify right side
    856,345.72x = 369,282,766,998.65
  5. Step 5: Solve for x
    x = 369,282,766,998.65/856,345.72
  6. Step 6: Final answer
    x = 431,230.94

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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.