Home / 815,713.60-1,221,601.46-490,566.64

Finding the Fourth Proportional to 815,713.60, 1,221,601.46 and 490,566.64

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Solution

The fourth proportional to 815,713.60, 1,221,601.46 and 490,566.64 is: 734,665.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,713.60 : 1,221,601.46 = 490,566.64 : x
  2. Step 2: Convert to fraction form
    815,713.60/1,221,601.46 = 490,566.64/x
  3. Step 3: Cross multiply
    815,713.60x = 1,221,601.46 × 490,566.64
  4. Step 4: Simplify right side
    815,713.60x = 599,276,923,651.29
  5. Step 5: Solve for x
    x = 599,276,923,651.29/815,713.60
  6. Step 6: Final answer
    x = 734,665.85

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1.5x scale

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.