Home / 678,329.40-1,017,494.10-205,087.80

Finding the Fourth Proportional to 678,329.40, 1,017,494.10 and 205,087.80

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Solution

The fourth proportional to 678,329.40, 1,017,494.10 and 205,087.80 is: 307,631.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,329.40 : 1,017,494.10 = 205,087.80 : x
  2. Step 2: Convert to fraction form
    678,329.40/1,017,494.10 = 205,087.80/x
  3. Step 3: Cross multiply
    678,329.40x = 1,017,494.10 × 205,087.80
  4. Step 4: Simplify right side
    678,329.40x = 208,675,626,481.98
  5. Step 5: Solve for x
    x = 208,675,626,481.98/678,329.40
  6. Step 6: Final answer
    x = 307,631.70

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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.