Home / 679,946.80-1,019,920.20-206,570.65

Finding the Fourth Proportional to 679,946.80, 1,019,920.20 and 206,570.65

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Solution

The fourth proportional to 679,946.80, 1,019,920.20 and 206,570.65 is: 309,855.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,946.80 : 1,019,920.20 = 206,570.65 : x
  2. Step 2: Convert to fraction form
    679,946.80/1,019,920.20 = 206,570.65/x
  3. Step 3: Cross multiply
    679,946.80x = 1,019,920.20 × 206,570.65
  4. Step 4: Simplify right side
    679,946.80x = 210,685,578,662.13
  5. Step 5: Solve for x
    x = 210,685,578,662.13/679,946.80
  6. Step 6: Final answer
    x = 309,855.98

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Double scale
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Similar ratio
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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.