Home / 812,784.02-1,121,630.10-450,206.69

Finding the Fourth Proportional to 812,784.02, 1,121,630.10 and 450,206.69

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Solution

The fourth proportional to 812,784.02, 1,121,630.10 and 450,206.69 is: 621,278.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,784.02 : 1,121,630.10 = 450,206.69 : x
  2. Step 2: Convert to fraction form
    812,784.02/1,121,630.10 = 450,206.69/x
  3. Step 3: Cross multiply
    812,784.02x = 1,121,630.10 × 450,206.69
  4. Step 4: Simplify right side
    812,784.02x = 504,965,374,725.37
  5. Step 5: Solve for x
    x = 504,965,374,725.37/812,784.02
  6. Step 6: Final answer
    x = 621,278.67

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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.