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Finding the Fourth Proportional to 451,243.60, 676,865.40 and 412,536.40

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Solution

The fourth proportional to 451,243.60, 676,865.40 and 412,536.40 is: 618,804.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,243.60 : 676,865.40 = 412,536.40 : x
  2. Step 2: Convert to fraction form
    451,243.60/676,865.40 = 412,536.40/x
  3. Step 3: Cross multiply
    451,243.60x = 676,865.40 × 412,536.40
  4. Step 4: Simplify right side
    451,243.60x = 279,231,615,400.56
  5. Step 5: Solve for x
    x = 279,231,615,400.56/451,243.60
  6. Step 6: Final answer
    x = 618,804.60

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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.