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Finding the Fourth Proportional to 820,652.70, 1,132,689.69 and 481,230.30

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Solution

The fourth proportional to 820,652.70, 1,132,689.69 and 481,230.30 is: 664,208.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,652.70 : 1,132,689.69 = 481,230.30 : x
  2. Step 2: Convert to fraction form
    820,652.70/1,132,689.69 = 481,230.30/x
  3. Step 3: Cross multiply
    820,652.70x = 1,132,689.69 × 481,230.30
  4. Step 4: Simplify right side
    820,652.70x = 545,084,599,325.61
  5. Step 5: Solve for x
    x = 545,084,599,325.61/820,652.70
  6. Step 6: Final answer
    x = 664,208.62

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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.