Home / 820,000.68-1,131,629.04-475,810.62

Finding the Fourth Proportional to 820,000.68, 1,131,629.04 and 475,810.62

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Solution

The fourth proportional to 820,000.68, 1,131,629.04 and 475,810.62 is: 656,634.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,000.68 : 1,131,629.04 = 475,810.62 : x
  2. Step 2: Convert to fraction form
    820,000.68/1,131,629.04 = 475,810.62/x
  3. Step 3: Cross multiply
    820,000.68x = 1,131,629.04 × 475,810.62
  4. Step 4: Simplify right side
    820,000.68x = 538,441,115,132.41
  5. Step 5: Solve for x
    x = 538,441,115,132.41/820,000.68
  6. Step 6: Final answer
    x = 656,634.96

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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.