Home / 679,945.80-1,019,918.70-206,569.65

Finding the Fourth Proportional to 679,945.80, 1,019,918.70 and 206,569.65

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Solution

The fourth proportional to 679,945.80, 1,019,918.70 and 206,569.65 is: 309,854.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,945.80 : 1,019,918.70 = 206,569.65 : x
  2. Step 2: Convert to fraction form
    679,945.80/1,019,918.70 = 206,569.65/x
  3. Step 3: Cross multiply
    679,945.80x = 1,019,918.70 × 206,569.65
  4. Step 4: Simplify right side
    679,945.80x = 210,684,248,887.46
  5. Step 5: Solve for x
    x = 210,684,248,887.46/679,945.80
  6. Step 6: Final answer
    x = 309,854.48

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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.