Home / 278,939,322.87-418,469,518.76-84,845,693.51

Finding the Fourth Proportional to 278,939,322.87, 418,469,518.76 and 84,845,693.51

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Solution

The fourth proportional to 278,939,322.87, 418,469,518.76 and 84,845,693.51 is: 127,286,953.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,939,322.87 : 418,469,518.76 = 84,845,693.51 : x
  2. Step 2: Convert to fraction form
    278,939,322.87/418,469,518.76 = 84,845,693.51/x
  3. Step 3: Cross multiply
    278,939,322.87x = 418,469,518.76 × 84,845,693.51
  4. Step 4: Simplify right side
    278,939,322.87x = 35,505,336,529,895,804
  5. Step 5: Solve for x
    x = 35,505,336,529,895,804/278,939,322.87
  6. Step 6: Final answer
    x = 127,286,953.18

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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.