Home / 820,139.87-1,230,209.80-733,780.70

Finding the Fourth Proportional to 820,139.87, 1,230,209.80 and 733,780.70

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Solution

The fourth proportional to 820,139.87, 1,230,209.80 and 733,780.70 is: 1,100,671.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,139.87 : 1,230,209.80 = 733,780.70 : x
  2. Step 2: Convert to fraction form
    820,139.87/1,230,209.80 = 733,780.70/x
  3. Step 3: Cross multiply
    820,139.87x = 1,230,209.80 × 733,780.70
  4. Step 4: Simplify right side
    820,139.87x = 902,704,208,190.86
  5. Step 5: Solve for x
    x = 902,704,208,190.86/820,139.87
  6. Step 6: Final answer
    x = 1,100,671.05

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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.