Home / 1,040,012.20-1,560,018.30-679,205.80

Finding the Fourth Proportional to 1,040,012.20, 1,560,018.30 and 679,205.80

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Solution

The fourth proportional to 1,040,012.20, 1,560,018.30 and 679,205.80 is: 1,018,808.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,012.20 : 1,560,018.30 = 679,205.80 : x
  2. Step 2: Convert to fraction form
    1,040,012.20/1,560,018.30 = 679,205.80/x
  3. Step 3: Cross multiply
    1,040,012.20x = 1,560,018.30 × 679,205.80
  4. Step 4: Simplify right side
    1,040,012.20x = 1,059,573,477,466.14
  5. Step 5: Solve for x
    x = 1,059,573,477,466.14/1,040,012.20
  6. Step 6: Final answer
    x = 1,018,808.70

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Double scale
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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.