Home / 1,690,358.44-2,535,630-428,197

Finding the Fourth Proportional to 1,690,358.44, 2,535,630 and 428,197

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Solution

The fourth proportional to 1,690,358.44, 2,535,630 and 428,197 is: 642,318.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690,358.44 : 2,535,630 = 428,197 : x
  2. Step 2: Convert to fraction form
    1,690,358.44/2,535,630 = 428,197/x
  3. Step 3: Cross multiply
    1,690,358.44x = 2,535,630 × 428,197
  4. Step 4: Simplify right side
    1,690,358.44x = 1,085,749,159,110
  5. Step 5: Solve for x
    x = 1,085,749,159,110/1,690,358.44
  6. Step 6: Final answer
    x = 642,318.89

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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.