Home / 821,960,615.81-1,232,940,899.89-379,172,288.75

Finding the Fourth Proportional to 821,960,615.81, 1,232,940,899.89 and 379,172,288.75

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Solution

The fourth proportional to 821,960,615.81, 1,232,940,899.89 and 379,172,288.75 is: 568,758,422.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,960,615.81 : 1,232,940,899.89 = 379,172,288.75 : x
  2. Step 2: Convert to fraction form
    821,960,615.81/1,232,940,899.89 = 379,172,288.75/x
  3. Step 3: Cross multiply
    821,960,615.81x = 1,232,940,899.89 × 379,172,288.75
  4. Step 4: Simplify right side
    821,960,615.81x = 467,497,022,902,880,064
  5. Step 5: Solve for x
    x = 467,497,022,902,880,064/821,960,615.81
  6. Step 6: Final answer
    x = 568,758,422.14

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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.