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Finding the Fourth Proportional to 565,561.52, 780,474.90 and 310,912.73

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Solution

The fourth proportional to 565,561.52, 780,474.90 and 310,912.73 is: 429,059.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,561.52 : 780,474.90 = 310,912.73 : x
  2. Step 2: Convert to fraction form
    565,561.52/780,474.90 = 310,912.73/x
  3. Step 3: Cross multiply
    565,561.52x = 780,474.90 × 310,912.73
  4. Step 4: Simplify right side
    565,561.52x = 242,659,581,855.48
  5. Step 5: Solve for x
    x = 242,659,581,855.48/565,561.52
  6. Step 6: Final answer
    x = 429,059.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.