Home / 716,642.58-988,954.24-389,944.56

Finding the Fourth Proportional to 716,642.58, 988,954.24 and 389,944.56

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Solution

The fourth proportional to 716,642.58, 988,954.24 and 389,944.56 is: 538,116.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,642.58 : 988,954.24 = 389,944.56 : x
  2. Step 2: Convert to fraction form
    716,642.58/988,954.24 = 389,944.56/x
  3. Step 3: Cross multiply
    716,642.58x = 988,954.24 × 389,944.56
  4. Step 4: Simplify right side
    716,642.58x = 385,637,325,976.93
  5. Step 5: Solve for x
    x = 385,637,325,976.93/716,642.58
  6. Step 6: Final answer
    x = 538,116.68

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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.