Home / 1,429,578.40-2,139,007.82-851,085.72

Finding the Fourth Proportional to 1,429,578.40, 2,139,007.82 and 851,085.72

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Solution

The fourth proportional to 1,429,578.40, 2,139,007.82 and 851,085.72 is: 1,273,437.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429,578.40 : 2,139,007.82 = 851,085.72 : x
  2. Step 2: Convert to fraction form
    1,429,578.40/2,139,007.82 = 851,085.72/x
  3. Step 3: Cross multiply
    1,429,578.40x = 2,139,007.82 × 851,085.72
  4. Step 4: Simplify right side
    1,429,578.40x = 1,820,479,010,570.33
  5. Step 5: Solve for x
    x = 1,820,479,010,570.33/1,429,578.40
  6. Step 6: Final answer
    x = 1,273,437.69

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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.