Home / 1,131,427.80-1,697,103.30-289,987.80

Finding the Fourth Proportional to 1,131,427.80, 1,697,103.30 and 289,987.80

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Solution

The fourth proportional to 1,131,427.80, 1,697,103.30 and 289,987.80 is: 434,971.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,427.80 : 1,697,103.30 = 289,987.80 : x
  2. Step 2: Convert to fraction form
    1,131,427.80/1,697,103.30 = 289,987.80/x
  3. Step 3: Cross multiply
    1,131,427.80x = 1,697,103.30 × 289,987.80
  4. Step 4: Simplify right side
    1,131,427.80x = 492,139,252,339.74
  5. Step 5: Solve for x
    x = 492,139,252,339.74/1,131,427.80
  6. Step 6: Final answer
    x = 434,971.86

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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.