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Finding the Fourth Proportional to 618,374,408.60, 927,561,612.90 and 557,152,405.40

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Solution

The fourth proportional to 618,374,408.60, 927,561,612.90 and 557,152,405.40 is: 835,728,608.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,374,408.60 : 927,561,612.90 = 557,152,405.40 : x
  2. Step 2: Convert to fraction form
    618,374,408.60/927,561,612.90 = 557,152,405.40/x
  3. Step 3: Cross multiply
    618,374,408.60x = 927,561,612.90 × 557,152,405.40
  4. Step 4: Simplify right side
    618,374,408.60x = 516,793,183,783,938,624
  5. Step 5: Solve for x
    x = 516,793,183,783,938,624/618,374,408.60
  6. Step 6: Final answer
    x = 835,728,608.10

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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.