Home / 856,713.70-1,285,180.71-287,849.08

Finding the Fourth Proportional to 856,713.70, 1,285,180.71 and 287,849.08

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Solution

The fourth proportional to 856,713.70, 1,285,180.71 and 287,849.08 is: 431,810.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,713.70 : 1,285,180.71 = 287,849.08 : x
  2. Step 2: Convert to fraction form
    856,713.70/1,285,180.71 = 287,849.08/x
  3. Step 3: Cross multiply
    856,713.70x = 1,285,180.71 × 287,849.08
  4. Step 4: Simplify right side
    856,713.70x = 369,938,085,007.25
  5. Step 5: Solve for x
    x = 369,938,085,007.25/856,713.70
  6. Step 6: Final answer
    x = 431,810.63

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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.