Home / 716,007.88-988,057.04-393,731.56

Finding the Fourth Proportional to 716,007.88, 988,057.04 and 393,731.56

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Solution

The fourth proportional to 716,007.88, 988,057.04 and 393,731.56 is: 543,330.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,007.88 : 988,057.04 = 393,731.56 : x
  2. Step 2: Convert to fraction form
    716,007.88/988,057.04 = 393,731.56/x
  3. Step 3: Cross multiply
    716,007.88x = 988,057.04 × 393,731.56
  4. Step 4: Simplify right side
    716,007.88x = 389,029,239,728.18
  5. Step 5: Solve for x
    x = 389,029,239,728.18/716,007.88
  6. Step 6: Final answer
    x = 543,330.95

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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.