Home / 1,243,410.70-1,866,100.20-485,615.20

Finding the Fourth Proportional to 1,243,410.70, 1,866,100.20 and 485,615.20

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Solution

The fourth proportional to 1,243,410.70, 1,866,100.20 and 485,615.20 is: 728,807.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,410.70 : 1,866,100.20 = 485,615.20 : x
  2. Step 2: Convert to fraction form
    1,243,410.70/1,866,100.20 = 485,615.20/x
  3. Step 3: Cross multiply
    1,243,410.70x = 1,866,100.20 × 485,615.20
  4. Step 4: Simplify right side
    1,243,410.70x = 906,206,621,843.04
  5. Step 5: Solve for x
    x = 906,206,621,843.04/1,243,410.70
  6. Step 6: Final answer
    x = 728,807.16

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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.