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Finding the Fourth Proportional to 780,855.30, 1,170,485.28 and 443,182.50

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Solution

The fourth proportional to 780,855.30, 1,170,485.28 and 443,182.50 is: 664,321.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,855.30 : 1,170,485.28 = 443,182.50 : x
  2. Step 2: Convert to fraction form
    780,855.30/1,170,485.28 = 443,182.50/x
  3. Step 3: Cross multiply
    780,855.30x = 1,170,485.28 × 443,182.50
  4. Step 4: Simplify right side
    780,855.30x = 518,738,592,603.60
  5. Step 5: Solve for x
    x = 518,738,592,603.60/780,855.30
  6. Step 6: Final answer
    x = 664,321.02

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.