Home / 1,284,482.56-1,918,911.44-831,513.28

Finding the Fourth Proportional to 1,284,482.56, 1,918,911.44 and 831,513.28

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Solution

The fourth proportional to 1,284,482.56, 1,918,911.44 and 831,513.28 is: 1,242,212.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284,482.56 : 1,918,911.44 = 831,513.28 : x
  2. Step 2: Convert to fraction form
    1,284,482.56/1,918,911.44 = 831,513.28/x
  3. Step 3: Cross multiply
    1,284,482.56x = 1,918,911.44 × 831,513.28
  4. Step 4: Simplify right side
    1,284,482.56x = 1,595,600,345,503.92
  5. Step 5: Solve for x
    x = 1,595,600,345,503.92/1,284,482.56
  6. Step 6: Final answer
    x = 1,242,212.54

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.