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Finding the Fourth Proportional to 862,651,805.90, 1,293,977,708.85 and 862,651,805.90

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Solution

The fourth proportional to 862,651,805.90, 1,293,977,708.85 and 862,651,805.90 is: 1,293,977,708.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,651,805.90 : 1,293,977,708.85 = 862,651,805.90 : x
  2. Step 2: Convert to fraction form
    862,651,805.90/1,293,977,708.85 = 862,651,805.90/x
  3. Step 3: Cross multiply
    862,651,805.90x = 1,293,977,708.85 × 862,651,805.90
  4. Step 4: Simplify right side
    862,651,805.90x = 1,116,252,207,333,796,736
  5. Step 5: Solve for x
    x = 1,116,252,207,333,796,736/862,651,805.90
  6. Step 6: Final answer
    x = 1,293,977,708.85

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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.