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Finding the Fourth Proportional to 872,516.70, 1,308,861.45 and 303,810.30

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Solution

The fourth proportional to 872,516.70, 1,308,861.45 and 303,810.30 is: 455,745.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,516.70 : 1,308,861.45 = 303,810.30 : x
  2. Step 2: Convert to fraction form
    872,516.70/1,308,861.45 = 303,810.30/x
  3. Step 3: Cross multiply
    872,516.70x = 1,308,861.45 × 303,810.30
  4. Step 4: Simplify right side
    872,516.70x = 397,645,589,782.94
  5. Step 5: Solve for x
    x = 397,645,589,782.94/872,516.70
  6. Step 6: Final answer
    x = 455,745.53

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1.5x scale

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.