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Finding the Fourth Proportional to 557,390,078.14, 769,154,735.19 and 309,856,359.10

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Solution

The fourth proportional to 557,390,078.14, 769,154,735.19 and 309,856,359.10 is: 427,577,553.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,390,078.14 : 769,154,735.19 = 309,856,359.10 : x
  2. Step 2: Convert to fraction form
    557,390,078.14/769,154,735.19 = 309,856,359.10/x
  3. Step 3: Cross multiply
    557,390,078.14x = 769,154,735.19 × 309,856,359.10
  4. Step 4: Simplify right side
    557,390,078.14x = 238,327,485,830,498,080
  5. Step 5: Solve for x
    x = 238,327,485,830,498,080/557,390,078.14
  6. Step 6: Final answer
    x = 427,577,553.27

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