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Finding the Fourth Proportional to 668,807,556.66, 922,956,566.45 and 371,449,744.97

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Solution

The fourth proportional to 668,807,556.66, 922,956,566.45 and 371,449,744.97 is: 512,601,835.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,807,556.66 : 922,956,566.45 = 371,449,744.97 : x
  2. Step 2: Convert to fraction form
    668,807,556.66/922,956,566.45 = 371,449,744.97/x
  3. Step 3: Cross multiply
    668,807,556.66x = 922,956,566.45 × 371,449,744.97
  4. Step 4: Simplify right side
    668,807,556.66x = 342,831,981,219,767,296
  5. Step 5: Solve for x
    x = 342,831,981,219,767,296/668,807,556.66
  6. Step 6: Final answer
    x = 512,601,835.62

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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.