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Finding the Fourth Proportional to 525,982,348.80, 788,973,523.20 and 219,494,419.20

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Solution

The fourth proportional to 525,982,348.80, 788,973,523.20 and 219,494,419.20 is: 329,241,628.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,982,348.80 : 788,973,523.20 = 219,494,419.20 : x
  2. Step 2: Convert to fraction form
    525,982,348.80/788,973,523.20 = 219,494,419.20/x
  3. Step 3: Cross multiply
    525,982,348.80x = 788,973,523.20 × 219,494,419.20
  4. Step 4: Simplify right side
    525,982,348.80x = 173,175,285,238,961,728
  5. Step 5: Solve for x
    x = 173,175,285,238,961,728/525,982,348.80
  6. Step 6: Final answer
    x = 329,241,628.80

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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.