Home / 820,901.28-1,133,032.48-481,478.88

Finding the Fourth Proportional to 820,901.28, 1,133,032.48 and 481,478.88

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Solution

The fourth proportional to 820,901.28, 1,133,032.48 and 481,478.88 is: 664,551.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,901.28 : 1,133,032.48 = 481,478.88 : x
  2. Step 2: Convert to fraction form
    820,901.28/1,133,032.48 = 481,478.88/x
  3. Step 3: Cross multiply
    820,901.28x = 1,133,032.48 × 481,478.88
  4. Step 4: Simplify right side
    820,901.28x = 545,531,209,474.02
  5. Step 5: Solve for x
    x = 545,531,209,474.02/820,901.28
  6. Step 6: Final answer
    x = 664,551.54

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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.