Home / 820,685.20-1,132,734.48-481,262.80

Finding the Fourth Proportional to 820,685.20, 1,132,734.48 and 481,262.80

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Solution

The fourth proportional to 820,685.20, 1,132,734.48 and 481,262.80 is: 664,253.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,685.20 : 1,132,734.48 = 481,262.80 : x
  2. Step 2: Convert to fraction form
    820,685.20/1,132,734.48 = 481,262.80/x
  3. Step 3: Cross multiply
    820,685.20x = 1,132,734.48 × 481,262.80
  4. Step 4: Simplify right side
    820,685.20x = 545,142,967,501.34
  5. Step 5: Solve for x
    x = 545,142,967,501.34/820,685.20
  6. Step 6: Final answer
    x = 664,253.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.