Home / 1,426,009.92-2,138,907.96-415,139.64

Finding the Fourth Proportional to 1,426,009.92, 2,138,907.96 and 415,139.64

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Solution

The fourth proportional to 1,426,009.92, 2,138,907.96 and 415,139.64 is: 622,678.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426,009.92 : 2,138,907.96 = 415,139.64 : x
  2. Step 2: Convert to fraction form
    1,426,009.92/2,138,907.96 = 415,139.64/x
  3. Step 3: Cross multiply
    1,426,009.92x = 2,138,907.96 × 415,139.64
  4. Step 4: Simplify right side
    1,426,009.92x = 887,945,480,507.53
  5. Step 5: Solve for x
    x = 887,945,480,507.53/1,426,009.92
  6. Step 6: Final answer
    x = 622,678.33

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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.