Home / 1,287,019.85-1,929,772.78-488,357.51

Finding the Fourth Proportional to 1,287,019.85, 1,929,772.78 and 488,357.51

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Solution

The fourth proportional to 1,287,019.85, 1,929,772.78 and 488,357.51 is: 732,249.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,019.85 : 1,929,772.78 = 488,357.51 : x
  2. Step 2: Convert to fraction form
    1,287,019.85/1,929,772.78 = 488,357.51/x
  3. Step 3: Cross multiply
    1,287,019.85x = 1,929,772.78 × 488,357.51
  4. Step 4: Simplify right side
    1,287,019.85x = 942,419,033,310.12
  5. Step 5: Solve for x
    x = 942,419,033,310.12/1,287,019.85
  6. Step 6: Final answer
    x = 732,249.03

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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.