Home / 426,059,832.80-639,089,749.20-339,966,390.80

Finding the Fourth Proportional to 426,059,832.80, 639,089,749.20 and 339,966,390.80

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Solution

The fourth proportional to 426,059,832.80, 639,089,749.20 and 339,966,390.80 is: 509,949,586.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,059,832.80 : 639,089,749.20 = 339,966,390.80 : x
  2. Step 2: Convert to fraction form
    426,059,832.80/639,089,749.20 = 339,966,390.80/x
  3. Step 3: Cross multiply
    426,059,832.80x = 639,089,749.20 × 339,966,390.80
  4. Step 4: Simplify right side
    426,059,832.80x = 217,269,035,432,801,216
  5. Step 5: Solve for x
    x = 217,269,035,432,801,216/426,059,832.80
  6. Step 6: Final answer
    x = 509,949,586.20

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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.