Home / 1,008,021,384.20-1,512,032,076.30-317,998,389.80

Finding the Fourth Proportional to 1,008,021,384.20, 1,512,032,076.30 and 317,998,389.80

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Solution

The fourth proportional to 1,008,021,384.20, 1,512,032,076.30 and 317,998,389.80 is: 476,997,584.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,021,384.20 : 1,512,032,076.30 = 317,998,389.80 : x
  2. Step 2: Convert to fraction form
    1,008,021,384.20/1,512,032,076.30 = 317,998,389.80/x
  3. Step 3: Cross multiply
    1,008,021,384.20x = 1,512,032,076.30 × 317,998,389.80
  4. Step 4: Simplify right side
    1,008,021,384.20x = 480,823,765,589,350,720
  5. Step 5: Solve for x
    x = 480,823,765,589,350,720/1,008,021,384.20
  6. Step 6: Final answer
    x = 476,997,584.70

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Double scale
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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.