Home / 770,745.70-1,156,118.55-209,779.30

Finding the Fourth Proportional to 770,745.70, 1,156,118.55 and 209,779.30

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Solution

The fourth proportional to 770,745.70, 1,156,118.55 and 209,779.30 is: 314,668.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,745.70 : 1,156,118.55 = 209,779.30 : x
  2. Step 2: Convert to fraction form
    770,745.70/1,156,118.55 = 209,779.30/x
  3. Step 3: Cross multiply
    770,745.70x = 1,156,118.55 × 209,779.30
  4. Step 4: Simplify right side
    770,745.70x = 242,529,740,136.02
  5. Step 5: Solve for x
    x = 242,529,740,136.02/770,745.70
  6. Step 6: Final answer
    x = 314,668.95

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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.