Home / 1,285,578.30-1,928,386.90-486,645.34

Finding the Fourth Proportional to 1,285,578.30, 1,928,386.90 and 486,645.34

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Solution

The fourth proportional to 1,285,578.30, 1,928,386.90 and 486,645.34 is: 729,975.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,578.30 : 1,928,386.90 = 486,645.34 : x
  2. Step 2: Convert to fraction form
    1,285,578.30/1,928,386.90 = 486,645.34/x
  3. Step 3: Cross multiply
    1,285,578.30x = 1,928,386.90 × 486,645.34
  4. Step 4: Simplify right side
    1,285,578.30x = 938,440,498,602.05
  5. Step 5: Solve for x
    x = 938,440,498,602.05/1,285,578.30
  6. Step 6: Final answer
    x = 729,975.37

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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.