Home / 812,513.55-1,121,254.83-449,929.59

Finding the Fourth Proportional to 812,513.55, 1,121,254.83 and 449,929.59

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Solution

The fourth proportional to 812,513.55, 1,121,254.83 and 449,929.59 is: 620,895.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,513.55 : 1,121,254.83 = 449,929.59 : x
  2. Step 2: Convert to fraction form
    812,513.55/1,121,254.83 = 449,929.59/x
  3. Step 3: Cross multiply
    812,513.55x = 1,121,254.83 × 449,929.59
  4. Step 4: Simplify right side
    812,513.55x = 504,485,725,947.42
  5. Step 5: Solve for x
    x = 504,485,725,947.42/812,513.55
  6. Step 6: Final answer
    x = 620,895.15

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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.