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Finding the Fourth Proportional to 393,394,928.60, 590,092,392.90 and 393,394,928.60

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Solution

The fourth proportional to 393,394,928.60, 590,092,392.90 and 393,394,928.60 is: 590,092,392.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,394,928.60 : 590,092,392.90 = 393,394,928.60 : x
  2. Step 2: Convert to fraction form
    393,394,928.60/590,092,392.90 = 393,394,928.60/x
  3. Step 3: Cross multiply
    393,394,928.60x = 590,092,392.90 × 393,394,928.60
  4. Step 4: Simplify right side
    393,394,928.60x = 232,139,354,772,298,656
  5. Step 5: Solve for x
    x = 232,139,354,772,298,656/393,394,928.60
  6. Step 6: Final answer
    x = 590,092,392.90

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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.