Home / 856,217.52-1,284,397.56-287,571.60

Finding the Fourth Proportional to 856,217.52, 1,284,397.56 and 287,571.60

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Solution

The fourth proportional to 856,217.52, 1,284,397.56 and 287,571.60 is: 431,381.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,217.52 : 1,284,397.56 = 287,571.60 : x
  2. Step 2: Convert to fraction form
    856,217.52/1,284,397.56 = 287,571.60/x
  3. Step 3: Cross multiply
    856,217.52x = 1,284,397.56 × 287,571.60
  4. Step 4: Simplify right side
    856,217.52x = 369,356,261,365.30
  5. Step 5: Solve for x
    x = 369,356,261,365.30/856,217.52
  6. Step 6: Final answer
    x = 431,381.34

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1.5x scale

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.