Home / 716,467.59-988,725.24-394,170.78

Finding the Fourth Proportional to 716,467.59, 988,725.24 and 394,170.78

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Solution

The fourth proportional to 716,467.59, 988,725.24 and 394,170.78 is: 543,955.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,467.59 : 988,725.24 = 394,170.78 : x
  2. Step 2: Convert to fraction form
    716,467.59/988,725.24 = 394,170.78/x
  3. Step 3: Cross multiply
    716,467.59x = 988,725.24 × 394,170.78
  4. Step 4: Simplify right side
    716,467.59x = 389,726,599,056.49
  5. Step 5: Solve for x
    x = 389,726,599,056.49/716,467.59
  6. Step 6: Final answer
    x = 543,955.66

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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.