Home / 1,243,514.70-1,866,256.20-485,719.20

Finding the Fourth Proportional to 1,243,514.70, 1,866,256.20 and 485,719.20

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Solution

The fourth proportional to 1,243,514.70, 1,866,256.20 and 485,719.20 is: 728,963.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,514.70 : 1,866,256.20 = 485,719.20 : x
  2. Step 2: Convert to fraction form
    1,243,514.70/1,866,256.20 = 485,719.20/x
  3. Step 3: Cross multiply
    1,243,514.70x = 1,866,256.20 × 485,719.20
  4. Step 4: Simplify right side
    1,243,514.70x = 906,476,468,459.04
  5. Step 5: Solve for x
    x = 906,476,468,459.04/1,243,514.70
  6. Step 6: Final answer
    x = 728,963.21

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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.