Home / 1,040,172.80-1,560,259.20-408,876.80

Finding the Fourth Proportional to 1,040,172.80, 1,560,259.20 and 408,876.80

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Solution

The fourth proportional to 1,040,172.80, 1,560,259.20 and 408,876.80 is: 613,315.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,172.80 : 1,560,259.20 = 408,876.80 : x
  2. Step 2: Convert to fraction form
    1,040,172.80/1,560,259.20 = 408,876.80/x
  3. Step 3: Cross multiply
    1,040,172.80x = 1,560,259.20 × 408,876.80
  4. Step 4: Simplify right side
    1,040,172.80x = 637,953,788,866.56
  5. Step 5: Solve for x
    x = 637,953,788,866.56/1,040,172.80
  6. Step 6: Final answer
    x = 613,315.20

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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.