Home / 1,938,380.54-2,907,570.12-518,399.76

Finding the Fourth Proportional to 1,938,380.54, 2,907,570.12 and 518,399.76

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Solution

The fourth proportional to 1,938,380.54, 2,907,570.12 and 518,399.76 is: 777,599.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938,380.54 : 2,907,570.12 = 518,399.76 : x
  2. Step 2: Convert to fraction form
    1,938,380.54/2,907,570.12 = 518,399.76/x
  3. Step 3: Cross multiply
    1,938,380.54x = 2,907,570.12 × 518,399.76
  4. Step 4: Simplify right side
    1,938,380.54x = 1,507,283,652,391.17
  5. Step 5: Solve for x
    x = 1,507,283,652,391.17/1,938,380.54
  6. Step 6: Final answer
    x = 777,599.46

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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.