Home / 1,276,729.64-1,915,374.54-378,241.60

Finding the Fourth Proportional to 1,276,729.64, 1,915,374.54 and 378,241.60

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Solution

The fourth proportional to 1,276,729.64, 1,915,374.54 and 378,241.60 is: 567,445.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,729.64 : 1,915,374.54 = 378,241.60 : x
  2. Step 2: Convert to fraction form
    1,276,729.64/1,915,374.54 = 378,241.60/x
  3. Step 3: Cross multiply
    1,276,729.64x = 1,915,374.54 × 378,241.60
  4. Step 4: Simplify right side
    1,276,729.64x = 724,474,330,608.86
  5. Step 5: Solve for x
    x = 724,474,330,608.86/1,276,729.64
  6. Step 6: Final answer
    x = 567,445.38

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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.