Home / 861,612.73-1,189,185.01-499,036.49

Finding the Fourth Proportional to 861,612.73, 1,189,185.01 and 499,036.49

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Solution

The fourth proportional to 861,612.73, 1,189,185.01 and 499,036.49 is: 688,762.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,612.73 : 1,189,185.01 = 499,036.49 : x
  2. Step 2: Convert to fraction form
    861,612.73/1,189,185.01 = 499,036.49/x
  3. Step 3: Cross multiply
    861,612.73x = 1,189,185.01 × 499,036.49
  4. Step 4: Simplify right side
    861,612.73x = 593,446,718,007.90
  5. Step 5: Solve for x
    x = 593,446,718,007.90/861,612.73
  6. Step 6: Final answer
    x = 688,762.71

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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.