Home / 858,888.12-1,288,165.95-259,708.80

Finding the Fourth Proportional to 858,888.12, 1,288,165.95 and 259,708.80

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Solution

The fourth proportional to 858,888.12, 1,288,165.95 and 259,708.80 is: 389,512.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,888.12 : 1,288,165.95 = 259,708.80 : x
  2. Step 2: Convert to fraction form
    858,888.12/1,288,165.95 = 259,708.80/x
  3. Step 3: Cross multiply
    858,888.12x = 1,288,165.95 × 259,708.80
  4. Step 4: Simplify right side
    858,888.12x = 334,548,033,075.36
  5. Step 5: Solve for x
    x = 334,548,033,075.36/858,888.12
  6. Step 6: Final answer
    x = 389,512.94

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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.