Home / 678,796.60-1,017,935.70-205,324.60

Finding the Fourth Proportional to 678,796.60, 1,017,935.70 and 205,324.60

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Solution

The fourth proportional to 678,796.60, 1,017,935.70 and 205,324.60 is: 307,908.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,796.60 : 1,017,935.70 = 205,324.60 : x
  2. Step 2: Convert to fraction form
    678,796.60/1,017,935.70 = 205,324.60/x
  3. Step 3: Cross multiply
    678,796.60x = 1,017,935.70 × 205,324.60
  4. Step 4: Simplify right side
    678,796.60x = 209,007,240,428.22
  5. Step 5: Solve for x
    x = 209,007,240,428.22/678,796.60
  6. Step 6: Final answer
    x = 307,908.50

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Double scale
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Similar ratio
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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.