Home / 839,890.82-1,259,840.86-208,804.64

Finding the Fourth Proportional to 839,890.82, 1,259,840.86 and 208,804.64

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Solution

The fourth proportional to 839,890.82, 1,259,840.86 and 208,804.64 is: 313,208.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,890.82 : 1,259,840.86 = 208,804.64 : x
  2. Step 2: Convert to fraction form
    839,890.82/1,259,840.86 = 208,804.64/x
  3. Step 3: Cross multiply
    839,890.82x = 1,259,840.86 × 208,804.64
  4. Step 4: Simplify right side
    839,890.82x = 263,060,609,886.36
  5. Step 5: Solve for x
    x = 263,060,609,886.36/839,890.82
  6. Step 6: Final answer
    x = 313,208.10

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Double scale
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1.5x scale

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.