Home / 988,816.80-1,481,256.90-515,768.70

Finding the Fourth Proportional to 988,816.80, 1,481,256.90 and 515,768.70

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Solution

The fourth proportional to 988,816.80, 1,481,256.90 and 515,768.70 is: 772,626.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,816.80 : 1,481,256.90 = 515,768.70 : x
  2. Step 2: Convert to fraction form
    988,816.80/1,481,256.90 = 515,768.70/x
  3. Step 3: Cross multiply
    988,816.80x = 1,481,256.90 × 515,768.70
  4. Step 4: Simplify right side
    988,816.80x = 763,985,945,679.03
  5. Step 5: Solve for x
    x = 763,985,945,679.03/988,816.80
  6. Step 6: Final answer
    x = 772,626.38

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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.