Home / 815,820.20-1,223,730.30-516,638.60

Finding the Fourth Proportional to 815,820.20, 1,223,730.30 and 516,638.60

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Solution

The fourth proportional to 815,820.20, 1,223,730.30 and 516,638.60 is: 774,957.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,820.20 : 1,223,730.30 = 516,638.60 : x
  2. Step 2: Convert to fraction form
    815,820.20/1,223,730.30 = 516,638.60/x
  3. Step 3: Cross multiply
    815,820.20x = 1,223,730.30 × 516,638.60
  4. Step 4: Simplify right side
    815,820.20x = 632,226,308,969.58
  5. Step 5: Solve for x
    x = 632,226,308,969.58/815,820.20
  6. Step 6: Final answer
    x = 774,957.90

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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.