Home / 815,005.99-1,222,774.61-409,989.18

Finding the Fourth Proportional to 815,005.99, 1,222,774.61 and 409,989.18

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Solution

The fourth proportional to 815,005.99, 1,222,774.61 and 409,989.18 is: 615,117.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,005.99 : 1,222,774.61 = 409,989.18 : x
  2. Step 2: Convert to fraction form
    815,005.99/1,222,774.61 = 409,989.18/x
  3. Step 3: Cross multiply
    815,005.99x = 1,222,774.61 × 409,989.18
  4. Step 4: Simplify right side
    815,005.99x = 501,324,357,628.77
  5. Step 5: Solve for x
    x = 501,324,357,628.77/815,005.99
  6. Step 6: Final answer
    x = 615,117.39

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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.