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Finding the Fourth Proportional to 565,245.92, 780,030.51 and 310,591.64

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Solution

The fourth proportional to 565,245.92, 780,030.51 and 310,591.64 is: 428,611.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,245.92 : 780,030.51 = 310,591.64 : x
  2. Step 2: Convert to fraction form
    565,245.92/780,030.51 = 310,591.64/x
  3. Step 3: Cross multiply
    565,245.92x = 780,030.51 × 310,591.64
  4. Step 4: Simplify right side
    565,245.92x = 242,270,951,450.78
  5. Step 5: Solve for x
    x = 242,270,951,450.78/565,245.92
  6. Step 6: Final answer
    x = 428,611.59

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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.