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Finding the Fourth Proportional to 668,409,741.67, 922,359,155.82 and 371,028,561.06

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Solution

The fourth proportional to 668,409,741.67, 922,359,155.82 and 371,028,561.06 is: 511,993,720.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,409,741.67 : 922,359,155.82 = 371,028,561.06 : x
  2. Step 2: Convert to fraction form
    668,409,741.67/922,359,155.82 = 371,028,561.06/x
  3. Step 3: Cross multiply
    668,409,741.67x = 922,359,155.82 × 371,028,561.06
  4. Step 4: Simplify right side
    668,409,741.67x = 342,221,590,365,982,912
  5. Step 5: Solve for x
    x = 342,221,590,365,982,912/668,409,741.67
  6. Step 6: Final answer
    x = 511,993,720.36

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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.