Home / 725,731,122.90-1,089,021,837.15-265,715,793.30

Finding the Fourth Proportional to 725,731,122.90, 1,089,021,837.15 and 265,715,793.30

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Solution

The fourth proportional to 725,731,122.90, 1,089,021,837.15 and 265,715,793.30 is: 398,729,353.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,731,122.90 : 1,089,021,837.15 = 265,715,793.30 : x
  2. Step 2: Convert to fraction form
    725,731,122.90/1,089,021,837.15 = 265,715,793.30/x
  3. Step 3: Cross multiply
    725,731,122.90x = 1,089,021,837.15 × 265,715,793.30
  4. Step 4: Simplify right side
    725,731,122.90x = 289,370,301,379,335,680
  5. Step 5: Solve for x
    x = 289,370,301,379,335,680/725,731,122.90
  6. Step 6: Final answer
    x = 398,729,353.40

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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.