Home / 858,075.12-1,287,121.59-259,041.24

Finding the Fourth Proportional to 858,075.12, 1,287,121.59 and 259,041.24

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Solution

The fourth proportional to 858,075.12, 1,287,121.59 and 259,041.24 is: 388,564.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,075.12 : 1,287,121.59 = 259,041.24 : x
  2. Step 2: Convert to fraction form
    858,075.12/1,287,121.59 = 259,041.24/x
  3. Step 3: Cross multiply
    858,075.12x = 1,287,121.59 × 259,041.24
  4. Step 4: Simplify right side
    858,075.12x = 333,417,572,704.37
  5. Step 5: Solve for x
    x = 333,417,572,704.37/858,075.12
  6. Step 6: Final answer
    x = 388,564.55

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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.