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Finding the Fourth Proportional to 543,348,245.70, 815,022,368.55 and 505,084,493.70

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Solution

The fourth proportional to 543,348,245.70, 815,022,368.55 and 505,084,493.70 is: 757,626,740.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,348,245.70 : 815,022,368.55 = 505,084,493.70 : x
  2. Step 2: Convert to fraction form
    543,348,245.70/815,022,368.55 = 505,084,493.70/x
  3. Step 3: Cross multiply
    543,348,245.70x = 815,022,368.55 × 505,084,493.70
  4. Step 4: Simplify right side
    543,348,245.70x = 411,655,160,373,251,520
  5. Step 5: Solve for x
    x = 411,655,160,373,251,520/543,348,245.70
  6. Step 6: Final answer
    x = 757,626,740.55

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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.