Home / 678,662.28-1,017,645.30-358,986.66

Finding the Fourth Proportional to 678,662.28, 1,017,645.30 and 358,986.66

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Solution

The fourth proportional to 678,662.28, 1,017,645.30 and 358,986.66 is: 538,295.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,662.28 : 1,017,645.30 = 358,986.66 : x
  2. Step 2: Convert to fraction form
    678,662.28/1,017,645.30 = 358,986.66/x
  3. Step 3: Cross multiply
    678,662.28x = 1,017,645.30 × 358,986.66
  4. Step 4: Simplify right side
    678,662.28x = 365,321,087,311.70
  5. Step 5: Solve for x
    x = 365,321,087,311.70/678,662.28
  6. Step 6: Final answer
    x = 538,295.85

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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.