Home / 557,834.20-769,811.30-303,185.40

Finding the Fourth Proportional to 557,834.20, 769,811.30 and 303,185.40

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Solution

The fourth proportional to 557,834.20, 769,811.30 and 303,185.40 is: 418,395.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,834.20 : 769,811.30 = 303,185.40 : x
  2. Step 2: Convert to fraction form
    557,834.20/769,811.30 = 303,185.40/x
  3. Step 3: Cross multiply
    557,834.20x = 769,811.30 × 303,185.40
  4. Step 4: Simplify right side
    557,834.20x = 233,395,546,915.02
  5. Step 5: Solve for x
    x = 233,395,546,915.02/557,834.20
  6. Step 6: Final answer
    x = 418,395.91

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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.