Home / 511,419,225.60-705,715,856.64-288,388,408.32

Finding the Fourth Proportional to 511,419,225.60, 705,715,856.64 and 288,388,408.32

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Solution

The fourth proportional to 511,419,225.60, 705,715,856.64 and 288,388,408.32 is: 397,951,939.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,419,225.60 : 705,715,856.64 = 288,388,408.32 : x
  2. Step 2: Convert to fraction form
    511,419,225.60/705,715,856.64 = 288,388,408.32/x
  3. Step 3: Cross multiply
    511,419,225.60x = 705,715,856.64 × 288,388,408.32
  4. Step 4: Simplify right side
    511,419,225.60x = 203,520,272,622,594,880
  5. Step 5: Solve for x
    x = 203,520,272,622,594,880/511,419,225.60
  6. Step 6: Final answer
    x = 397,951,939.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.