Home / 816,520.95-1,126,803.29-449,021.78

Finding the Fourth Proportional to 816,520.95, 1,126,803.29 and 449,021.78

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Solution

The fourth proportional to 816,520.95, 1,126,803.29 and 449,021.78 is: 619,652.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,520.95 : 1,126,803.29 = 449,021.78 : x
  2. Step 2: Convert to fraction form
    816,520.95/1,126,803.29 = 449,021.78/x
  3. Step 3: Cross multiply
    816,520.95x = 1,126,803.29 × 449,021.78
  4. Step 4: Simplify right side
    816,520.95x = 505,959,222,925.22
  5. Step 5: Solve for x
    x = 505,959,222,925.22/816,520.95
  6. Step 6: Final answer
    x = 619,652.47

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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.