Home / 1,285,910.60-1,928,136.90-487,218.20

Finding the Fourth Proportional to 1,285,910.60, 1,928,136.90 and 487,218.20

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Solution

The fourth proportional to 1,285,910.60, 1,928,136.90 and 487,218.20 is: 730,551.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,910.60 : 1,928,136.90 = 487,218.20 : x
  2. Step 2: Convert to fraction form
    1,285,910.60/1,928,136.90 = 487,218.20/x
  3. Step 3: Cross multiply
    1,285,910.60x = 1,928,136.90 × 487,218.20
  4. Step 4: Simplify right side
    1,285,910.60x = 939,423,389,771.58
  5. Step 5: Solve for x
    x = 939,423,389,771.58/1,285,910.60
  6. Step 6: Final answer
    x = 730,551.09

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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.