Home / 914,681,905.32-1,372,020,142.70-259,633,485.92

Finding the Fourth Proportional to 914,681,905.32, 1,372,020,142.70 and 259,633,485.92

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Solution

The fourth proportional to 914,681,905.32, 1,372,020,142.70 and 259,633,485.92 is: 389,449,458.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    914,681,905.32 : 1,372,020,142.70 = 259,633,485.92 : x
  2. Step 2: Convert to fraction form
    914,681,905.32/1,372,020,142.70 = 259,633,485.92/x
  3. Step 3: Cross multiply
    914,681,905.32x = 1,372,020,142.70 × 259,633,485.92
  4. Step 4: Simplify right side
    914,681,905.32x = 356,222,372,401,656,832
  5. Step 5: Solve for x
    x = 356,222,372,401,656,832/914,681,905.32
  6. Step 6: Final answer
    x = 389,449,458.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.