Home / 718,723.23-991,820.69-396,426.41

Finding the Fourth Proportional to 718,723.23, 991,820.69 and 396,426.41

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Solution

The fourth proportional to 718,723.23, 991,820.69 and 396,426.41 is: 547,058.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,723.23 : 991,820.69 = 396,426.41 : x
  2. Step 2: Convert to fraction form
    718,723.23/991,820.69 = 396,426.41/x
  3. Step 3: Cross multiply
    718,723.23x = 991,820.69 × 396,426.41
  4. Step 4: Simplify right side
    718,723.23x = 393,183,915,997.14
  5. Step 5: Solve for x
    x = 393,183,915,997.14/718,723.23
  6. Step 6: Final answer
    x = 547,058.86

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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.