Home / 716,685.18-989,025.70-394,395.27

Finding the Fourth Proportional to 716,685.18, 989,025.70 and 394,395.27

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Solution

The fourth proportional to 716,685.18, 989,025.70 and 394,395.27 is: 544,265.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,685.18 : 989,025.70 = 394,395.27 : x
  2. Step 2: Convert to fraction form
    716,685.18/989,025.70 = 394,395.27/x
  3. Step 3: Cross multiply
    716,685.18x = 989,025.70 × 394,395.27
  4. Step 4: Simplify right side
    716,685.18x = 390,067,057,988.44
  5. Step 5: Solve for x
    x = 390,067,057,988.44/716,685.18
  6. Step 6: Final answer
    x = 544,265.56

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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.