Home / 511,499,205.25-705,867,575.59-285,435,818.64

Finding the Fourth Proportional to 511,499,205.25, 705,867,575.59 and 285,435,818.64

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Solution

The fourth proportional to 511,499,205.25, 705,867,575.59 and 285,435,818.64 is: 393,900,688.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,499,205.25 : 705,867,575.59 = 285,435,818.64 : x
  2. Step 2: Convert to fraction form
    511,499,205.25/705,867,575.59 = 285,435,818.64/x
  3. Step 3: Cross multiply
    511,499,205.25x = 705,867,575.59 × 285,435,818.64
  4. Step 4: Simplify right side
    511,499,205.25x = 201,479,889,289,250,112
  5. Step 5: Solve for x
    x = 201,479,889,289,250,112/511,499,205.25
  6. Step 6: Final answer
    x = 393,900,688.84

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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.