Home / 718,914.30-992,101.80-396,625.14

Finding the Fourth Proportional to 718,914.30, 992,101.80 and 396,625.14

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Solution

The fourth proportional to 718,914.30, 992,101.80 and 396,625.14 is: 547,342.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,914.30 : 992,101.80 = 396,625.14 : x
  2. Step 2: Convert to fraction form
    718,914.30/992,101.80 = 396,625.14/x
  3. Step 3: Cross multiply
    718,914.30x = 992,101.80 × 396,625.14
  4. Step 4: Simplify right side
    718,914.30x = 393,492,515,319.25
  5. Step 5: Solve for x
    x = 393,492,515,319.25/718,914.30
  6. Step 6: Final answer
    x = 547,342.73

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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.