Home / 862,415,998.80-1,293,623,998.20-658,342,654.80

Finding the Fourth Proportional to 862,415,998.80, 1,293,623,998.20 and 658,342,654.80

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Solution

The fourth proportional to 862,415,998.80, 1,293,623,998.20 and 658,342,654.80 is: 987,513,982.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,415,998.80 : 1,293,623,998.20 = 658,342,654.80 : x
  2. Step 2: Convert to fraction form
    862,415,998.80/1,293,623,998.20 = 658,342,654.80/x
  3. Step 3: Cross multiply
    862,415,998.80x = 1,293,623,998.20 × 658,342,654.80
  4. Step 4: Simplify right side
    862,415,998.80x = 851,647,857,287,978,368
  5. Step 5: Solve for x
    x = 851,647,857,287,978,368/862,415,998.80
  6. Step 6: Final answer
    x = 987,513,982.20

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Double scale
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Similar ratio
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1.5x scale

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.