Home / 1,280,045.21-1,766,883.36-1,018,879.58

Finding the Fourth Proportional to 1,280,045.21, 1,766,883.36 and 1,018,879.58

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Solution

The fourth proportional to 1,280,045.21, 1,766,883.36 and 1,018,879.58 is: 1,406,388.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,045.21 : 1,766,883.36 = 1,018,879.58 : x
  2. Step 2: Convert to fraction form
    1,280,045.21/1,766,883.36 = 1,018,879.58/x
  3. Step 3: Cross multiply
    1,280,045.21x = 1,766,883.36 × 1,018,879.58
  4. Step 4: Simplify right side
    1,280,045.21x = 1,800,241,366,911.37
  5. Step 5: Solve for x
    x = 1,800,241,366,911.37/1,280,045.21
  6. Step 6: Final answer
    x = 1,406,388.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.