Home / 656,806.20-985,136.40-538,270.80

Finding the Fourth Proportional to 656,806.20, 985,136.40 and 538,270.80

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Solution

The fourth proportional to 656,806.20, 985,136.40 and 538,270.80 is: 807,346.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,806.20 : 985,136.40 = 538,270.80 : x
  2. Step 2: Convert to fraction form
    656,806.20/985,136.40 = 538,270.80/x
  3. Step 3: Cross multiply
    656,806.20x = 985,136.40 × 538,270.80
  4. Step 4: Simplify right side
    656,806.20x = 530,270,158,137.12
  5. Step 5: Solve for x
    x = 530,270,158,137.12/656,806.20
  6. Step 6: Final answer
    x = 807,346.46

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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.