Home / 853,694.88-1,178,320.30-491,155.88

Finding the Fourth Proportional to 853,694.88, 1,178,320.30 and 491,155.88

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Solution

The fourth proportional to 853,694.88, 1,178,320.30 and 491,155.88 is: 677,922.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,694.88 : 1,178,320.30 = 491,155.88 : x
  2. Step 2: Convert to fraction form
    853,694.88/1,178,320.30 = 491,155.88/x
  3. Step 3: Cross multiply
    853,694.88x = 1,178,320.30 × 491,155.88
  4. Step 4: Simplify right side
    853,694.88x = 578,738,943,868.36
  5. Step 5: Solve for x
    x = 578,738,943,868.36/853,694.88
  6. Step 6: Final answer
    x = 677,922.47

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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.