Home / 716,350.50-988,498.89-394,074.18

Finding the Fourth Proportional to 716,350.50, 988,498.89 and 394,074.18

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Solution

The fourth proportional to 716,350.50, 988,498.89 and 394,074.18 is: 543,786.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,350.50 : 988,498.89 = 394,074.18 : x
  2. Step 2: Convert to fraction form
    716,350.50/988,498.89 = 394,074.18/x
  3. Step 3: Cross multiply
    716,350.50x = 988,498.89 × 394,074.18
  4. Step 4: Simplify right side
    716,350.50x = 389,541,889,507.66
  5. Step 5: Solve for x
    x = 389,541,889,507.66/716,350.50
  6. Step 6: Final answer
    x = 543,786.72

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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.