Home / 1,690,371.44-2,535,649.68-428,210

Finding the Fourth Proportional to 1,690,371.44, 2,535,649.68 and 428,210

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Solution

The fourth proportional to 1,690,371.44, 2,535,649.68 and 428,210 is: 642,338.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690,371.44 : 2,535,649.68 = 428,210 : x
  2. Step 2: Convert to fraction form
    1,690,371.44/2,535,649.68 = 428,210/x
  3. Step 3: Cross multiply
    1,690,371.44x = 2,535,649.68 × 428,210
  4. Step 4: Simplify right side
    1,690,371.44x = 1,085,790,549,472.80
  5. Step 5: Solve for x
    x = 1,085,790,549,472.80/1,690,371.44
  6. Step 6: Final answer
    x = 642,338.44

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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.