Home / 12,784,563.20-19,176,844.80-5,207,628.80

Finding the Fourth Proportional to 12,784,563.20, 19,176,844.80 and 5,207,628.80

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Solution

The fourth proportional to 12,784,563.20, 19,176,844.80 and 5,207,628.80 is: 7,811,443.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,784,563.20 : 19,176,844.80 = 5,207,628.80 : x
  2. Step 2: Convert to fraction form
    12,784,563.20/19,176,844.80 = 5,207,628.80/x
  3. Step 3: Cross multiply
    12,784,563.20x = 19,176,844.80 × 5,207,628.80
  4. Step 4: Simplify right side
    12,784,563.20x = 99,865,889,273,610.23
  5. Step 5: Solve for x
    x = 99,865,889,273,610.23/12,784,563.20
  6. Step 6: Final answer
    x = 7,811,443.20

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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.