Home / 1,208,896.90-1,812,959.36-399,131.15

Finding the Fourth Proportional to 1,208,896.90, 1,812,959.36 and 399,131.15

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Solution

The fourth proportional to 1,208,896.90, 1,812,959.36 and 399,131.15 is: 598,569.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,896.90 : 1,812,959.36 = 399,131.15 : x
  2. Step 2: Convert to fraction form
    1,208,896.90/1,812,959.36 = 399,131.15/x
  3. Step 3: Cross multiply
    1,208,896.90x = 1,812,959.36 × 399,131.15
  4. Step 4: Simplify right side
    1,208,896.90x = 723,608,546,941.47
  5. Step 5: Solve for x
    x = 723,608,546,941.47/1,208,896.90
  6. Step 6: Final answer
    x = 598,569.28

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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.