Home / 12,512,000.80-18,754,004.40-5,322,311.20

Finding the Fourth Proportional to 12,512,000.80, 18,754,004.40 and 5,322,311.20

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Solution

The fourth proportional to 12,512,000.80, 18,754,004.40 and 5,322,311.20 is: 7,977,512.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,512,000.80 : 18,754,004.40 = 5,322,311.20 : x
  2. Step 2: Convert to fraction form
    12,512,000.80/18,754,004.40 = 5,322,311.20/x
  3. Step 3: Cross multiply
    12,512,000.80x = 18,754,004.40 × 5,322,311.20
  4. Step 4: Simplify right side
    12,512,000.80x = 99,814,647,662,969.28
  5. Step 5: Solve for x
    x = 99,814,647,662,969.28/12,512,000.80
  6. Step 6: Final answer
    x = 7,977,512.89

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1.5x scale

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.