Home / 861,809.45-1,189,333.80-479,836.13

Finding the Fourth Proportional to 861,809.45, 1,189,333.80 and 479,836.13

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Solution

The fourth proportional to 861,809.45, 1,189,333.80 and 479,836.13 is: 662,194.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,809.45 : 1,189,333.80 = 479,836.13 : x
  2. Step 2: Convert to fraction form
    861,809.45/1,189,333.80 = 479,836.13/x
  3. Step 3: Cross multiply
    861,809.45x = 1,189,333.80 × 479,836.13
  4. Step 4: Simplify right side
    861,809.45x = 570,685,321,923.53
  5. Step 5: Solve for x
    x = 570,685,321,923.53/861,809.45
  6. Step 6: Final answer
    x = 662,194.32

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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.