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Finding the Fourth Proportional to 553,022,654.55, 828,954,591.77 and 257,674,242.57

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Solution

The fourth proportional to 553,022,654.55, 828,954,591.77 and 257,674,242.57 is: 386,241,404.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,022,654.55 : 828,954,591.77 = 257,674,242.57 : x
  2. Step 2: Convert to fraction form
    553,022,654.55/828,954,591.77 = 257,674,242.57/x
  3. Step 3: Cross multiply
    553,022,654.55x = 828,954,591.77 × 257,674,242.57
  4. Step 4: Simplify right side
    553,022,654.55x = 213,600,246,557,969,920
  5. Step 5: Solve for x
    x = 213,600,246,557,969,920/553,022,654.55
  6. Step 6: Final answer
    x = 386,241,404.04

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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.