Home / 493,784.64-681,436.80-278,933.76

Finding the Fourth Proportional to 493,784.64, 681,436.80 and 278,933.76

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Solution

The fourth proportional to 493,784.64, 681,436.80 and 278,933.76 is: 384,936.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,784.64 : 681,436.80 = 278,933.76 : x
  2. Step 2: Convert to fraction form
    493,784.64/681,436.80 = 278,933.76/x
  3. Step 3: Cross multiply
    493,784.64x = 681,436.80 × 278,933.76
  4. Step 4: Simplify right side
    493,784.64x = 190,075,728,826.37
  5. Step 5: Solve for x
    x = 190,075,728,826.37/493,784.64
  6. Step 6: Final answer
    x = 384,936.50

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1.5x scale

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.