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Finding the Fourth Proportional to 511,775.50, 768,328.46 and 393,529.87

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Solution

The fourth proportional to 511,775.50, 768,328.46 and 393,529.87 is: 590,806.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,775.50 : 768,328.46 = 393,529.87 : x
  2. Step 2: Convert to fraction form
    511,775.50/768,328.46 = 393,529.87/x
  3. Step 3: Cross multiply
    511,775.50x = 768,328.46 × 393,529.87
  4. Step 4: Simplify right side
    511,775.50x = 302,360,198,981.10
  5. Step 5: Solve for x
    x = 302,360,198,981.10/511,775.50
  6. Step 6: Final answer
    x = 590,806.32

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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.