Home / 990,537.80-1,485,720.30-325,689.80

Finding the Fourth Proportional to 990,537.80, 1,485,720.30 and 325,689.80

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Solution

The fourth proportional to 990,537.80, 1,485,720.30 and 325,689.80 is: 488,506.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,537.80 : 1,485,720.30 = 325,689.80 : x
  2. Step 2: Convert to fraction form
    990,537.80/1,485,720.30 = 325,689.80/x
  3. Step 3: Cross multiply
    990,537.80x = 1,485,720.30 × 325,689.80
  4. Step 4: Simplify right side
    990,537.80x = 483,883,947,362.94
  5. Step 5: Solve for x
    x = 483,883,947,362.94/990,537.80
  6. Step 6: Final answer
    x = 488,506.29

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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.