Home / 1,365,891.40-2,048,837.10-419,139.10

Finding the Fourth Proportional to 1,365,891.40, 2,048,837.10 and 419,139.10

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Solution

The fourth proportional to 1,365,891.40, 2,048,837.10 and 419,139.10 is: 628,708.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,365,891.40 : 2,048,837.10 = 419,139.10 : x
  2. Step 2: Convert to fraction form
    1,365,891.40/2,048,837.10 = 419,139.10/x
  3. Step 3: Cross multiply
    1,365,891.40x = 2,048,837.10 × 419,139.10
  4. Step 4: Simplify right side
    1,365,891.40x = 858,747,738,140.61
  5. Step 5: Solve for x
    x = 858,747,738,140.61/1,365,891.40
  6. Step 6: Final answer
    x = 628,708.65

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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.