Home / 718,979.32-992,221.47-396,710.29

Finding the Fourth Proportional to 718,979.32, 992,221.47 and 396,710.29

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Solution

The fourth proportional to 718,979.32, 992,221.47 and 396,710.29 is: 547,476.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,979.32 : 992,221.47 = 396,710.29 : x
  2. Step 2: Convert to fraction form
    718,979.32/992,221.47 = 396,710.29/x
  3. Step 3: Cross multiply
    718,979.32x = 992,221.47 × 396,710.29
  4. Step 4: Simplify right side
    718,979.32x = 393,624,467,107.93
  5. Step 5: Solve for x
    x = 393,624,467,107.93/718,979.32
  6. Step 6: Final answer
    x = 547,476.76

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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.