Home / 821,496,199.68-1,231,984,140.48-268,670,897.28

Finding the Fourth Proportional to 821,496,199.68, 1,231,984,140.48 and 268,670,897.28

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Solution

The fourth proportional to 821,496,199.68, 1,231,984,140.48 and 268,670,897.28 is: 402,921,260.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,496,199.68 : 1,231,984,140.48 = 268,670,897.28 : x
  2. Step 2: Convert to fraction form
    821,496,199.68/1,231,984,140.48 = 268,670,897.28/x
  3. Step 3: Cross multiply
    821,496,199.68x = 1,231,984,140.48 × 268,670,897.28
  4. Step 4: Simplify right side
    821,496,199.68x = 330,998,284,457,491,136
  5. Step 5: Solve for x
    x = 330,998,284,457,491,136/821,496,199.68
  6. Step 6: Final answer
    x = 402,921,260.73

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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.