Home / 820,210.80-1,231,628.40-620,756.40

Finding the Fourth Proportional to 820,210.80, 1,231,628.40 and 620,756.40

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Solution

The fourth proportional to 820,210.80, 1,231,628.40 and 620,756.40 is: 932,127.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,210.80 : 1,231,628.40 = 620,756.40 : x
  2. Step 2: Convert to fraction form
    820,210.80/1,231,628.40 = 620,756.40/x
  3. Step 3: Cross multiply
    820,210.80x = 1,231,628.40 × 620,756.40
  4. Step 4: Simplify right side
    820,210.80x = 764,541,211,721.76
  5. Step 5: Solve for x
    x = 764,541,211,721.76/820,210.80
  6. Step 6: Final answer
    x = 932,127.71

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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.