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Finding the Fourth Proportional to 587,851,415.66, 811,220,023.13 and 319,915,858.88

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Solution

The fourth proportional to 587,851,415.66, 811,220,023.13 and 319,915,858.88 is: 441,475,759.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,851,415.66 : 811,220,023.13 = 319,915,858.88 : x
  2. Step 2: Convert to fraction form
    587,851,415.66/811,220,023.13 = 319,915,858.88/x
  3. Step 3: Cross multiply
    587,851,415.66x = 811,220,023.13 × 319,915,858.88
  4. Step 4: Simplify right side
    587,851,415.66x = 259,522,150,434,631,744
  5. Step 5: Solve for x
    x = 259,522,150,434,631,744/587,851,415.66
  6. Step 6: Final answer
    x = 441,475,759.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.