Home / 1,338,021.60-2,004,310.80-831,026.40

Finding the Fourth Proportional to 1,338,021.60, 2,004,310.80 and 831,026.40

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Solution

The fourth proportional to 1,338,021.60, 2,004,310.80 and 831,026.40 is: 1,244,849.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338,021.60 : 2,004,310.80 = 831,026.40 : x
  2. Step 2: Convert to fraction form
    1,338,021.60/2,004,310.80 = 831,026.40/x
  3. Step 3: Cross multiply
    1,338,021.60x = 2,004,310.80 × 831,026.40
  4. Step 4: Simplify right side
    1,338,021.60x = 1,665,635,188,605.12
  5. Step 5: Solve for x
    x = 1,665,635,188,605.12/1,338,021.60
  6. Step 6: Final answer
    x = 1,244,849.25

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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.