Home / 1,211,709.40-1,817,564.10-413,891.80

Finding the Fourth Proportional to 1,211,709.40, 1,817,564.10 and 413,891.80

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Solution

The fourth proportional to 1,211,709.40, 1,817,564.10 and 413,891.80 is: 620,837.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,709.40 : 1,817,564.10 = 413,891.80 : x
  2. Step 2: Convert to fraction form
    1,211,709.40/1,817,564.10 = 413,891.80/x
  3. Step 3: Cross multiply
    1,211,709.40x = 1,817,564.10 × 413,891.80
  4. Step 4: Simplify right side
    1,211,709.40x = 752,274,876,964.38
  5. Step 5: Solve for x
    x = 752,274,876,964.38/1,211,709.40
  6. Step 6: Final answer
    x = 620,837.70

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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.