Home / 678,287.40-1,017,576.90-205,020.60

Finding the Fourth Proportional to 678,287.40, 1,017,576.90 and 205,020.60

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Solution

The fourth proportional to 678,287.40, 1,017,576.90 and 205,020.60 is: 307,574.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,287.40 : 1,017,576.90 = 205,020.60 : x
  2. Step 2: Convert to fraction form
    678,287.40/1,017,576.90 = 205,020.60/x
  3. Step 3: Cross multiply
    678,287.40x = 1,017,576.90 × 205,020.60
  4. Step 4: Simplify right side
    678,287.40x = 208,624,226,584.14
  5. Step 5: Solve for x
    x = 208,624,226,584.14/678,287.40
  6. Step 6: Final answer
    x = 307,574.97

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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.