Home / 812,513.04-1,121,254.07-449,929.09

Finding the Fourth Proportional to 812,513.04, 1,121,254.07 and 449,929.09

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Solution

The fourth proportional to 812,513.04, 1,121,254.07 and 449,929.09 is: 620,894.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,513.04 : 1,121,254.07 = 449,929.09 : x
  2. Step 2: Convert to fraction form
    812,513.04/1,121,254.07 = 449,929.09/x
  3. Step 3: Cross multiply
    812,513.04x = 1,121,254.07 × 449,929.09
  4. Step 4: Simplify right side
    812,513.04x = 504,484,823,373.90
  5. Step 5: Solve for x
    x = 504,484,823,373.90/812,513.04
  6. Step 6: Final answer
    x = 620,894.43

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1.5x scale

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.