Home / 1,690,144.89-2,535,309.66-427,983.45

Finding the Fourth Proportional to 1,690,144.89, 2,535,309.66 and 427,983.45

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Solution

The fourth proportional to 1,690,144.89, 2,535,309.66 and 427,983.45 is: 641,998.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690,144.89 : 2,535,309.66 = 427,983.45 : x
  2. Step 2: Convert to fraction form
    1,690,144.89/2,535,309.66 = 427,983.45/x
  3. Step 3: Cross multiply
    1,690,144.89x = 2,535,309.66 × 427,983.45
  4. Step 4: Simplify right side
    1,690,144.89x = 1,085,070,575,105.13
  5. Step 5: Solve for x
    x = 1,085,070,575,105.13/1,690,144.89
  6. Step 6: Final answer
    x = 641,998.55

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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.