Home / 1,292,028.30-1,938,455.55-393,641.10

Finding the Fourth Proportional to 1,292,028.30, 1,938,455.55 and 393,641.10

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Solution

The fourth proportional to 1,292,028.30, 1,938,455.55 and 393,641.10 is: 590,587.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,028.30 : 1,938,455.55 = 393,641.10 : x
  2. Step 2: Convert to fraction form
    1,292,028.30/1,938,455.55 = 393,641.10/x
  3. Step 3: Cross multiply
    1,292,028.30x = 1,938,455.55 × 393,641.10
  4. Step 4: Simplify right side
    1,292,028.30x = 763,055,775,003.11
  5. Step 5: Solve for x
    x = 763,055,775,003.11/1,292,028.30
  6. Step 6: Final answer
    x = 590,587.51

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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.