Home / 820,681.18-1,132,728.96-481,258.78

Finding the Fourth Proportional to 820,681.18, 1,132,728.96 and 481,258.78

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Solution

The fourth proportional to 820,681.18, 1,132,728.96 and 481,258.78 is: 664,247.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,681.18 : 1,132,728.96 = 481,258.78 : x
  2. Step 2: Convert to fraction form
    820,681.18/1,132,728.96 = 481,258.78/x
  3. Step 3: Cross multiply
    820,681.18x = 1,132,728.96 × 481,258.78
  4. Step 4: Simplify right side
    820,681.18x = 545,135,757,360.27
  5. Step 5: Solve for x
    x = 545,135,757,360.27/820,681.18
  6. Step 6: Final answer
    x = 664,247.91

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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.