Home / 298,385,056.50-408,789,009.14-287,201,736.98

Finding the Fourth Proportional to 298,385,056.50, 408,789,009.14 and 287,201,736.98

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Solution

The fourth proportional to 298,385,056.50, 408,789,009.14 and 287,201,736.98 is: 393,467,805.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,385,056.50 : 408,789,009.14 = 287,201,736.98 : x
  2. Step 2: Convert to fraction form
    298,385,056.50/408,789,009.14 = 287,201,736.98/x
  3. Step 3: Cross multiply
    298,385,056.50x = 408,789,009.14 × 287,201,736.98
  4. Step 4: Simplify right side
    298,385,056.50x = 117,404,913,484,166,704
  5. Step 5: Solve for x
    x = 117,404,913,484,166,704/298,385,056.50
  6. Step 6: Final answer
    x = 393,467,805.86

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.