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Finding the Fourth Proportional to 627,993,463.32, 866,615,139.90 and 345,733,086.23

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Solution

The fourth proportional to 627,993,463.32, 866,615,139.90 and 345,733,086.23 is: 477,102,938.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,993,463.32 : 866,615,139.90 = 345,733,086.23 : x
  2. Step 2: Convert to fraction form
    627,993,463.32/866,615,139.90 = 345,733,086.23/x
  3. Step 3: Cross multiply
    627,993,463.32x = 866,615,139.90 × 345,733,086.23
  4. Step 4: Simplify right side
    627,993,463.32x = 299,617,526,886,937,152
  5. Step 5: Solve for x
    x = 299,617,526,886,937,152/627,993,463.32
  6. Step 6: Final answer
    x = 477,102,938.78

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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.