Home / 1,086,491.40-1,628,570.70-412,312.20

Finding the Fourth Proportional to 1,086,491.40, 1,628,570.70 and 412,312.20

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Solution

The fourth proportional to 1,086,491.40, 1,628,570.70 and 412,312.20 is: 618,025.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,491.40 : 1,628,570.70 = 412,312.20 : x
  2. Step 2: Convert to fraction form
    1,086,491.40/1,628,570.70 = 412,312.20/x
  3. Step 3: Cross multiply
    1,086,491.40x = 1,628,570.70 × 412,312.20
  4. Step 4: Simplify right side
    1,086,491.40x = 671,479,568,172.54
  5. Step 5: Solve for x
    x = 671,479,568,172.54/1,086,491.40
  6. Step 6: Final answer
    x = 618,025.66

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Double scale
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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.