Home / 716,665.32-988,977.20-394,375.23

Finding the Fourth Proportional to 716,665.32, 988,977.20 and 394,375.23

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Solution

The fourth proportional to 716,665.32, 988,977.20 and 394,375.23 is: 544,226.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,665.32 : 988,977.20 = 394,375.23 : x
  2. Step 2: Convert to fraction form
    716,665.32/988,977.20 = 394,375.23/x
  3. Step 3: Cross multiply
    716,665.32x = 988,977.20 × 394,375.23
  4. Step 4: Simplify right side
    716,665.32x = 390,028,108,742.88
  5. Step 5: Solve for x
    x = 390,028,108,742.88/716,665.32
  6. Step 6: Final answer
    x = 544,226.29

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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.