Home / 815,845.76-1,223,422.61-388,887.67

Finding the Fourth Proportional to 815,845.76, 1,223,422.61 and 388,887.67

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Solution

The fourth proportional to 815,845.76, 1,223,422.61 and 388,887.67 is: 583,166.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,845.76 : 1,223,422.61 = 388,887.67 : x
  2. Step 2: Convert to fraction form
    815,845.76/1,223,422.61 = 388,887.67/x
  3. Step 3: Cross multiply
    815,845.76x = 1,223,422.61 × 388,887.67
  4. Step 4: Simplify right side
    815,845.76x = 475,773,962,111.11
  5. Step 5: Solve for x
    x = 475,773,962,111.11/815,845.76
  6. Step 6: Final answer
    x = 583,166.56

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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.