Home / 1,292,120.82-1,938,028.59-345,564.90

Finding the Fourth Proportional to 1,292,120.82, 1,938,028.59 and 345,564.90

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Solution

The fourth proportional to 1,292,120.82, 1,938,028.59 and 345,564.90 is: 518,306.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,120.82 : 1,938,028.59 = 345,564.90 : x
  2. Step 2: Convert to fraction form
    1,292,120.82/1,938,028.59 = 345,564.90/x
  3. Step 3: Cross multiply
    1,292,120.82x = 1,938,028.59 × 345,564.90
  4. Step 4: Simplify right side
    1,292,120.82x = 669,714,655,900.49
  5. Step 5: Solve for x
    x = 669,714,655,900.49/1,292,120.82
  6. Step 6: Final answer
    x = 518,306.53

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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.