Home / 820,139.37-1,230,209.05-733,780.20

Finding the Fourth Proportional to 820,139.37, 1,230,209.05 and 733,780.20

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Solution

The fourth proportional to 820,139.37, 1,230,209.05 and 733,780.20 is: 1,100,670.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,139.37 : 1,230,209.05 = 733,780.20 : x
  2. Step 2: Convert to fraction form
    820,139.37/1,230,209.05 = 733,780.20/x
  3. Step 3: Cross multiply
    820,139.37x = 1,230,209.05 × 733,780.20
  4. Step 4: Simplify right side
    820,139.37x = 902,703,042,750.81
  5. Step 5: Solve for x
    x = 902,703,042,750.81/820,139.37
  6. Step 6: Final answer
    x = 1,100,670.30

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1.5x scale

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.