Home / 718,914.96-992,157.66-396,687.24

Finding the Fourth Proportional to 718,914.96, 992,157.66 and 396,687.24

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Solution

The fourth proportional to 718,914.96, 992,157.66 and 396,687.24 is: 547,458.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,914.96 : 992,157.66 = 396,687.24 : x
  2. Step 2: Convert to fraction form
    718,914.96/992,157.66 = 396,687.24/x
  3. Step 3: Cross multiply
    718,914.96x = 992,157.66 × 396,687.24
  4. Step 4: Simplify right side
    718,914.96x = 393,576,283,790.26
  5. Step 5: Solve for x
    x = 393,576,283,790.26/718,914.96
  6. Step 6: Final answer
    x = 547,458.75

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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.