Home / 991,261.80-1,485,855.90-541,290.60

Finding the Fourth Proportional to 991,261.80, 1,485,855.90 and 541,290.60

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Solution

The fourth proportional to 991,261.80, 1,485,855.90 and 541,290.60 is: 811,369.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,261.80 : 1,485,855.90 = 541,290.60 : x
  2. Step 2: Convert to fraction form
    991,261.80/1,485,855.90 = 541,290.60/x
  3. Step 3: Cross multiply
    991,261.80x = 1,485,855.90 × 541,290.60
  4. Step 4: Simplify right side
    991,261.80x = 804,279,831,624.54
  5. Step 5: Solve for x
    x = 804,279,831,624.54/991,261.80
  6. Step 6: Final answer
    x = 811,369.74

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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.