Home / 1,428,326.40-1,971,024.36-783,730.56

Finding the Fourth Proportional to 1,428,326.40, 1,971,024.36 and 783,730.56

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Solution

The fourth proportional to 1,428,326.40, 1,971,024.36 and 783,730.56 is: 1,081,511.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,326.40 : 1,971,024.36 = 783,730.56 : x
  2. Step 2: Convert to fraction form
    1,428,326.40/1,971,024.36 = 783,730.56/x
  3. Step 3: Cross multiply
    1,428,326.40x = 1,971,024.36 × 783,730.56
  4. Step 4: Simplify right side
    1,428,326.40x = 1,544,752,025,436.44
  5. Step 5: Solve for x
    x = 1,544,752,025,436.44/1,428,326.40
  6. Step 6: Final answer
    x = 1,081,511.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.