Home / 857,914.53-1,286,839.44-258,859.71

Finding the Fourth Proportional to 857,914.53, 1,286,839.44 and 258,859.71

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Solution

The fourth proportional to 857,914.53, 1,286,839.44 and 258,859.71 is: 388,279.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,914.53 : 1,286,839.44 = 258,859.71 : x
  2. Step 2: Convert to fraction form
    857,914.53/1,286,839.44 = 258,859.71/x
  3. Step 3: Cross multiply
    857,914.53x = 1,286,839.44 × 258,859.71
  4. Step 4: Simplify right side
    857,914.53x = 333,110,884,254.96
  5. Step 5: Solve for x
    x = 333,110,884,254.96/857,914.53
  6. Step 6: Final answer
    x = 388,279.80

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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.