Home / 812,802.60-1,121,623.20-450,198

Finding the Fourth Proportional to 812,802.60, 1,121,623.20 and 450,198

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Solution

The fourth proportional to 812,802.60, 1,121,623.20 and 450,198 is: 621,248.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,802.60 : 1,121,623.20 = 450,198 : x
  2. Step 2: Convert to fraction form
    812,802.60/1,121,623.20 = 450,198/x
  3. Step 3: Cross multiply
    812,802.60x = 1,121,623.20 × 450,198
  4. Step 4: Simplify right side
    812,802.60x = 504,952,521,393.60
  5. Step 5: Solve for x
    x = 504,952,521,393.60/812,802.60
  6. Step 6: Final answer
    x = 621,248.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.