Home / 716,453.60-988,666.68-394,111.28

Finding the Fourth Proportional to 716,453.60, 988,666.68 and 394,111.28

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Solution

The fourth proportional to 716,453.60, 988,666.68 and 394,111.28 is: 543,851.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,453.60 : 988,666.68 = 394,111.28 : x
  2. Step 2: Convert to fraction form
    716,453.60/988,666.68 = 394,111.28/x
  3. Step 3: Cross multiply
    716,453.60x = 988,666.68 × 394,111.28
  4. Step 4: Simplify right side
    716,453.60x = 389,644,690,748.15
  5. Step 5: Solve for x
    x = 389,644,690,748.15/716,453.60
  6. Step 6: Final answer
    x = 543,851.95

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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.