Home / 1,243,420.70-1,866,115.20-485,625.20

Finding the Fourth Proportional to 1,243,420.70, 1,866,115.20 and 485,625.20

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Solution

The fourth proportional to 1,243,420.70, 1,866,115.20 and 485,625.20 is: 728,822.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,420.70 : 1,866,115.20 = 485,625.20 : x
  2. Step 2: Convert to fraction form
    1,243,420.70/1,866,115.20 = 485,625.20/x
  3. Step 3: Cross multiply
    1,243,420.70x = 1,866,115.20 × 485,625.20
  4. Step 4: Simplify right side
    1,243,420.70x = 906,232,567,223.04
  5. Step 5: Solve for x
    x = 906,232,567,223.04/1,243,420.70
  6. Step 6: Final answer
    x = 728,822.17

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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.