Home / 815,815.20-1,223,722.80-516,633.60

Finding the Fourth Proportional to 815,815.20, 1,223,722.80 and 516,633.60

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Solution

The fourth proportional to 815,815.20, 1,223,722.80 and 516,633.60 is: 774,950.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,815.20 : 1,223,722.80 = 516,633.60 : x
  2. Step 2: Convert to fraction form
    815,815.20/1,223,722.80 = 516,633.60/x
  3. Step 3: Cross multiply
    815,815.20x = 1,223,722.80 × 516,633.60
  4. Step 4: Simplify right side
    815,815.20x = 632,216,315,566.08
  5. Step 5: Solve for x
    x = 632,216,315,566.08/815,815.20
  6. Step 6: Final answer
    x = 774,950.40

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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.