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Finding the Fourth Proportional to 512,937.60, 770,718.60 and 455,200.80

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Solution

The fourth proportional to 512,937.60, 770,718.60 and 455,200.80 is: 683,965.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,937.60 : 770,718.60 = 455,200.80 : x
  2. Step 2: Convert to fraction form
    512,937.60/770,718.60 = 455,200.80/x
  3. Step 3: Cross multiply
    512,937.60x = 770,718.60 × 455,200.80
  4. Step 4: Simplify right side
    512,937.60x = 350,831,723,294.88
  5. Step 5: Solve for x
    x = 350,831,723,294.88/512,937.60
  6. Step 6: Final answer
    x = 683,965.70

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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.