Home / 12,780,149.20-19,163,225.40-5,198,549.20

Finding the Fourth Proportional to 12,780,149.20, 19,163,225.40 and 5,198,549.20

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Solution

The fourth proportional to 12,780,149.20, 19,163,225.40 and 5,198,549.20 is: 7,794,977.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,780,149.20 : 19,163,225.40 = 5,198,549.20 : x
  2. Step 2: Convert to fraction form
    12,780,149.20/19,163,225.40 = 5,198,549.20/x
  3. Step 3: Cross multiply
    12,780,149.20x = 19,163,225.40 × 5,198,549.20
  4. Step 4: Simplify right side
    12,780,149.20x = 99,620,970,072,589.67
  5. Step 5: Solve for x
    x = 99,620,970,072,589.67/12,780,149.20
  6. Step 6: Final answer
    x = 7,794,977.08

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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.