Home / 678,431.36-1,017,683.04-205,104.64

Finding the Fourth Proportional to 678,431.36, 1,017,683.04 and 205,104.64

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Solution

The fourth proportional to 678,431.36, 1,017,683.04 and 205,104.64 is: 307,667.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,431.36 : 1,017,683.04 = 205,104.64 : x
  2. Step 2: Convert to fraction form
    678,431.36/1,017,683.04 = 205,104.64/x
  3. Step 3: Cross multiply
    678,431.36x = 1,017,683.04 × 205,104.64
  4. Step 4: Simplify right side
    678,431.36x = 208,731,513,553.31
  5. Step 5: Solve for x
    x = 208,731,513,553.31/678,431.36
  6. Step 6: Final answer
    x = 307,667.84

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Double scale
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Similar ratio
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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.