Home / 988,840.80-1,481,292.90-515,792.70

Finding the Fourth Proportional to 988,840.80, 1,481,292.90 and 515,792.70

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Solution

The fourth proportional to 988,840.80, 1,481,292.90 and 515,792.70 is: 772,662.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,840.80 : 1,481,292.90 = 515,792.70 : x
  2. Step 2: Convert to fraction form
    988,840.80/1,481,292.90 = 515,792.70/x
  3. Step 3: Cross multiply
    988,840.80x = 1,481,292.90 × 515,792.70
  4. Step 4: Simplify right side
    988,840.80x = 764,040,064,381.83
  5. Step 5: Solve for x
    x = 764,040,064,381.83/988,840.80
  6. Step 6: Final answer
    x = 772,662.36

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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.