Home / 812,101.50-1,120,683.84-449,525.28

Finding the Fourth Proportional to 812,101.50, 1,120,683.84 and 449,525.28

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Solution

The fourth proportional to 812,101.50, 1,120,683.84 and 449,525.28 is: 620,335.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,101.50 : 1,120,683.84 = 449,525.28 : x
  2. Step 2: Convert to fraction form
    812,101.50/1,120,683.84 = 449,525.28/x
  3. Step 3: Cross multiply
    812,101.50x = 1,120,683.84 × 449,525.28
  4. Step 4: Simplify right side
    812,101.50x = 503,775,716,967.48
  5. Step 5: Solve for x
    x = 503,775,716,967.48/812,101.50
  6. Step 6: Final answer
    x = 620,335.90

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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.