Home / 1,690,331.94-2,535,590.25-428,170.50

Finding the Fourth Proportional to 1,690,331.94, 2,535,590.25 and 428,170.50

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Solution

The fourth proportional to 1,690,331.94, 2,535,590.25 and 428,170.50 is: 642,279.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690,331.94 : 2,535,590.25 = 428,170.50 : x
  2. Step 2: Convert to fraction form
    1,690,331.94/2,535,590.25 = 428,170.50/x
  3. Step 3: Cross multiply
    1,690,331.94x = 2,535,590.25 × 428,170.50
  4. Step 4: Simplify right side
    1,690,331.94x = 1,085,664,945,137.63
  5. Step 5: Solve for x
    x = 1,085,664,945,137.63/1,690,331.94
  6. Step 6: Final answer
    x = 642,279.14

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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.