Home / 678,406.26-1,017,757.01-205,079.31

Finding the Fourth Proportional to 678,406.26, 1,017,757.01 and 205,079.31

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Solution

The fourth proportional to 678,406.26, 1,017,757.01 and 205,079.31 is: 307,663.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,406.26 : 1,017,757.01 = 205,079.31 : x
  2. Step 2: Convert to fraction form
    678,406.26/1,017,757.01 = 205,079.31/x
  3. Step 3: Cross multiply
    678,406.26x = 1,017,757.01 × 205,079.31
  4. Step 4: Simplify right side
    678,406.26x = 208,720,905,358.46
  5. Step 5: Solve for x
    x = 208,720,905,358.46/678,406.26
  6. Step 6: Final answer
    x = 307,663.59

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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.