Home / 399,619.90-598,913.16-298,990.56

Finding the Fourth Proportional to 399,619.90, 598,913.16 and 298,990.56

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Solution

The fourth proportional to 399,619.90, 598,913.16 and 298,990.56 is: 448,099.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,619.90 : 598,913.16 = 298,990.56 : x
  2. Step 2: Convert to fraction form
    399,619.90/598,913.16 = 298,990.56/x
  3. Step 3: Cross multiply
    399,619.90x = 598,913.16 × 298,990.56
  4. Step 4: Simplify right side
    399,619.90x = 179,069,378,855.59
  5. Step 5: Solve for x
    x = 179,069,378,855.59/399,619.90
  6. Step 6: Final answer
    x = 448,099.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.