Home / 1,690,486.03-2,535,876.69-428,313.66

Finding the Fourth Proportional to 1,690,486.03, 2,535,876.69 and 428,313.66

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Solution

The fourth proportional to 1,690,486.03, 2,535,876.69 and 428,313.66 is: 642,507.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690,486.03 : 2,535,876.69 = 428,313.66 : x
  2. Step 2: Convert to fraction form
    1,690,486.03/2,535,876.69 = 428,313.66/x
  3. Step 3: Cross multiply
    1,690,486.03x = 2,535,876.69 × 428,313.66
  4. Step 4: Simplify right side
    1,690,486.03x = 1,086,150,615,286.87
  5. Step 5: Solve for x
    x = 1,086,150,615,286.87/1,690,486.03
  6. Step 6: Final answer
    x = 642,507.89

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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.