Home / 1,179,075-1,768,986.32-420,900.20

Finding the Fourth Proportional to 1,179,075, 1,768,986.32 and 420,900.20

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Solution

The fourth proportional to 1,179,075, 1,768,986.32 and 420,900.20 is: 631,483.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179,075 : 1,768,986.32 = 420,900.20 : x
  2. Step 2: Convert to fraction form
    1,179,075/1,768,986.32 = 420,900.20/x
  3. Step 3: Cross multiply
    1,179,075x = 1,768,986.32 × 420,900.20
  4. Step 4: Simplify right side
    1,179,075x = 744,566,695,885.26
  5. Step 5: Solve for x
    x = 744,566,695,885.26/1,179,075
  6. Step 6: Final answer
    x = 631,483.74

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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.