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Finding the Fourth Proportional to 499,328,812.80, 748,993,219.20 and 492,162,451.20

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Solution

The fourth proportional to 499,328,812.80, 748,993,219.20 and 492,162,451.20 is: 738,243,676.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,328,812.80 : 748,993,219.20 = 492,162,451.20 : x
  2. Step 2: Convert to fraction form
    499,328,812.80/748,993,219.20 = 492,162,451.20/x
  3. Step 3: Cross multiply
    499,328,812.80x = 748,993,219.20 × 492,162,451.20
  4. Step 4: Simplify right side
    499,328,812.80x = 368,626,338,693,650,944
  5. Step 5: Solve for x
    x = 368,626,338,693,650,944/499,328,812.80
  6. Step 6: Final answer
    x = 738,243,676.80

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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.