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Finding the Fourth Proportional to 627,659,189.51, 866,177,649.31 and 345,434,125.06

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Solution

The fourth proportional to 627,659,189.51, 866,177,649.31 and 345,434,125.06 is: 476,703,477.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,659,189.51 : 866,177,649.31 = 345,434,125.06 : x
  2. Step 2: Convert to fraction form
    627,659,189.51/866,177,649.31 = 345,434,125.06/x
  3. Step 3: Cross multiply
    627,659,189.51x = 866,177,649.31 × 345,434,125.06
  4. Step 4: Simplify right side
    627,659,189.51x = 299,207,318,431,596,480
  5. Step 5: Solve for x
    x = 299,207,318,431,596,480/627,659,189.51
  6. Step 6: Final answer
    x = 476,703,477.67

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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.