Home / 499,430,820.80-749,146,231.20-354,311,998.40

Finding the Fourth Proportional to 499,430,820.80, 749,146,231.20 and 354,311,998.40

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Solution

The fourth proportional to 499,430,820.80, 749,146,231.20 and 354,311,998.40 is: 531,467,997.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,430,820.80 : 749,146,231.20 = 354,311,998.40 : x
  2. Step 2: Convert to fraction form
    499,430,820.80/749,146,231.20 = 354,311,998.40/x
  3. Step 3: Cross multiply
    499,430,820.80x = 749,146,231.20 × 354,311,998.40
  4. Step 4: Simplify right side
    499,430,820.80x = 265,431,498,270,300,416
  5. Step 5: Solve for x
    x = 265,431,498,270,300,416/499,430,820.80
  6. Step 6: Final answer
    x = 531,467,997.60

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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.