Home / 1,809,858.98-2,715,138.40-687,840.50

Finding the Fourth Proportional to 1,809,858.98, 2,715,138.40 and 687,840.50

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Solution

The fourth proportional to 1,809,858.98, 2,715,138.40 and 687,840.50 is: 1,031,893.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,809,858.98 : 2,715,138.40 = 687,840.50 : x
  2. Step 2: Convert to fraction form
    1,809,858.98/2,715,138.40 = 687,840.50/x
  3. Step 3: Cross multiply
    1,809,858.98x = 2,715,138.40 × 687,840.50
  4. Step 4: Simplify right side
    1,809,858.98x = 1,867,582,154,625.20
  5. Step 5: Solve for x
    x = 1,867,582,154,625.20/1,809,858.98
  6. Step 6: Final answer
    x = 1,031,893.74

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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.