Home / 678,425.80-1,017,786.30-205,098.80

Finding the Fourth Proportional to 678,425.80, 1,017,786.30 and 205,098.80

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Solution

The fourth proportional to 678,425.80, 1,017,786.30 and 205,098.80 is: 307,692.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,425.80 : 1,017,786.30 = 205,098.80 : x
  2. Step 2: Convert to fraction form
    678,425.80/1,017,786.30 = 205,098.80/x
  3. Step 3: Cross multiply
    678,425.80x = 1,017,786.30 × 205,098.80
  4. Step 4: Simplify right side
    678,425.80x = 208,746,748,786.44
  5. Step 5: Solve for x
    x = 208,746,748,786.44/678,425.80
  6. Step 6: Final answer
    x = 307,692.82

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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.