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Finding the Fourth Proportional to 512,932.10, 770,710.35 and 455,195.30

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Solution

The fourth proportional to 512,932.10, 770,710.35 and 455,195.30 is: 683,957.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,932.10 : 770,710.35 = 455,195.30 : x
  2. Step 2: Convert to fraction form
    512,932.10/770,710.35 = 455,195.30/x
  3. Step 3: Cross multiply
    512,932.10x = 770,710.35 × 455,195.30
  4. Step 4: Simplify right side
    512,932.10x = 350,823,728,981.36
  5. Step 5: Solve for x
    x = 350,823,728,981.36/512,932.10
  6. Step 6: Final answer
    x = 683,957.45

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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.