Home / 819,622.80-1,229,434.20-746,139.60

Finding the Fourth Proportional to 819,622.80, 1,229,434.20 and 746,139.60

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Solution

The fourth proportional to 819,622.80, 1,229,434.20 and 746,139.60 is: 1,119,209.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,622.80 : 1,229,434.20 = 746,139.60 : x
  2. Step 2: Convert to fraction form
    819,622.80/1,229,434.20 = 746,139.60/x
  3. Step 3: Cross multiply
    819,622.80x = 1,229,434.20 × 746,139.60
  4. Step 4: Simplify right side
    819,622.80x = 917,329,542,214.32
  5. Step 5: Solve for x
    x = 917,329,542,214.32/819,622.80
  6. Step 6: Final answer
    x = 1,119,209.40

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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.