Home / 718,824.30-991,985.91-396,546.15

Finding the Fourth Proportional to 718,824.30, 991,985.91 and 396,546.15

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Solution

The fourth proportional to 718,824.30, 991,985.91 and 396,546.15 is: 547,238.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,824.30 : 991,985.91 = 396,546.15 : x
  2. Step 2: Convert to fraction form
    718,824.30/991,985.91 = 396,546.15/x
  3. Step 3: Cross multiply
    718,824.30x = 991,985.91 × 396,546.15
  4. Step 4: Simplify right side
    718,824.30x = 393,368,193,464.75
  5. Step 5: Solve for x
    x = 393,368,193,464.75/718,824.30
  6. Step 6: Final answer
    x = 547,238.31

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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.