Home / 656,776.20-985,091.40-538,240.80

Finding the Fourth Proportional to 656,776.20, 985,091.40 and 538,240.80

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Solution

The fourth proportional to 656,776.20, 985,091.40 and 538,240.80 is: 807,301.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,776.20 : 985,091.40 = 538,240.80 : x
  2. Step 2: Convert to fraction form
    656,776.20/985,091.40 = 538,240.80/x
  3. Step 3: Cross multiply
    656,776.20x = 985,091.40 × 538,240.80
  4. Step 4: Simplify right side
    656,776.20x = 530,216,383,209.12
  5. Step 5: Solve for x
    x = 530,216,383,209.12/656,776.20
  6. Step 6: Final answer
    x = 807,301.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.