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Finding the Fourth Proportional to 513,999.60, 770,999.40 and 505,251.60

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Solution

The fourth proportional to 513,999.60, 770,999.40 and 505,251.60 is: 757,877.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,999.60 : 770,999.40 = 505,251.60 : x
  2. Step 2: Convert to fraction form
    513,999.60/770,999.40 = 505,251.60/x
  3. Step 3: Cross multiply
    513,999.60x = 770,999.40 × 505,251.60
  4. Step 4: Simplify right side
    513,999.60x = 389,548,680,449.04
  5. Step 5: Solve for x
    x = 389,548,680,449.04/513,999.60
  6. Step 6: Final answer
    x = 757,877.40

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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.