Home / 921,483.52-1,380,431.91-520,912.60

Finding the Fourth Proportional to 921,483.52, 1,380,431.91 and 520,912.60

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Solution

The fourth proportional to 921,483.52, 1,380,431.91 and 520,912.60 is: 780,355.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,483.52 : 1,380,431.91 = 520,912.60 : x
  2. Step 2: Convert to fraction form
    921,483.52/1,380,431.91 = 520,912.60/x
  3. Step 3: Cross multiply
    921,483.52x = 1,380,431.91 × 520,912.60
  4. Step 4: Simplify right side
    921,483.52x = 719,084,375,361.07
  5. Step 5: Solve for x
    x = 719,084,375,361.07/921,483.52
  6. Step 6: Final answer
    x = 780,355.11

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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.