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Finding the Fourth Proportional to 488,673,993.08, 673,737,135.22 and 316,508,766.46

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Solution

The fourth proportional to 488,673,993.08, 673,737,135.22 and 316,508,766.46 is: 436,372,126.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,673,993.08 : 673,737,135.22 = 316,508,766.46 : x
  2. Step 2: Convert to fraction form
    488,673,993.08/673,737,135.22 = 316,508,766.46/x
  3. Step 3: Cross multiply
    488,673,993.08x = 673,737,135.22 × 316,508,766.46
  4. Step 4: Simplify right side
    488,673,993.08x = 213,243,709,585,487,712
  5. Step 5: Solve for x
    x = 213,243,709,585,487,712/488,673,993.08
  6. Step 6: Final answer
    x = 436,372,126.62

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Why These Related Problems?

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