Home / 1,217,009.80-1,825,514.70-418,220.20

Finding the Fourth Proportional to 1,217,009.80, 1,825,514.70 and 418,220.20

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Solution

The fourth proportional to 1,217,009.80, 1,825,514.70 and 418,220.20 is: 627,330.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,009.80 : 1,825,514.70 = 418,220.20 : x
  2. Step 2: Convert to fraction form
    1,217,009.80/1,825,514.70 = 418,220.20/x
  3. Step 3: Cross multiply
    1,217,009.80x = 1,825,514.70 × 418,220.20
  4. Step 4: Simplify right side
    1,217,009.80x = 763,467,122,936.94
  5. Step 5: Solve for x
    x = 763,467,122,936.94/1,217,009.80
  6. Step 6: Final answer
    x = 627,330.30

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Double scale
Find fourth proportional to 1,217,010.80, 1,825,516.20 and 418,221.20
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.