Home / 815,288.45-1,125,201.85-493,000.85

Finding the Fourth Proportional to 815,288.45, 1,125,201.85 and 493,000.85

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Solution

The fourth proportional to 815,288.45, 1,125,201.85 and 493,000.85 is: 680,403.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,288.45 : 1,125,201.85 = 493,000.85 : x
  2. Step 2: Convert to fraction form
    815,288.45/1,125,201.85 = 493,000.85/x
  3. Step 3: Cross multiply
    815,288.45x = 1,125,201.85 × 493,000.85
  4. Step 4: Simplify right side
    815,288.45x = 554,725,462,845.56
  5. Step 5: Solve for x
    x = 554,725,462,845.56/815,288.45
  6. Step 6: Final answer
    x = 680,403.93

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1.5x scale

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.