Home / 718,936.08-992,186.64-396,708.24

Finding the Fourth Proportional to 718,936.08, 992,186.64 and 396,708.24

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Solution

The fourth proportional to 718,936.08, 992,186.64 and 396,708.24 is: 547,487.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,936.08 : 992,186.64 = 396,708.24 : x
  2. Step 2: Convert to fraction form
    718,936.08/992,186.64 = 396,708.24/x
  3. Step 3: Cross multiply
    718,936.08x = 992,186.64 × 396,708.24
  4. Step 4: Simplify right side
    718,936.08x = 393,608,615,705.91
  5. Step 5: Solve for x
    x = 393,608,615,705.91/718,936.08
  6. Step 6: Final answer
    x = 547,487.64

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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.