Home / 12,313,006.40-18,469,509.60-7,778,043.20

Finding the Fourth Proportional to 12,313,006.40, 18,469,509.60 and 7,778,043.20

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Solution

The fourth proportional to 12,313,006.40, 18,469,509.60 and 7,778,043.20 is: 11,667,064.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,313,006.40 : 18,469,509.60 = 7,778,043.20 : x
  2. Step 2: Convert to fraction form
    12,313,006.40/18,469,509.60 = 7,778,043.20/x
  3. Step 3: Cross multiply
    12,313,006.40x = 18,469,509.60 × 7,778,043.20
  4. Step 4: Simplify right side
    12,313,006.40x = 143,656,643,551,614.75
  5. Step 5: Solve for x
    x = 143,656,643,551,614.75/12,313,006.40
  6. Step 6: Final answer
    x = 11,667,064.80

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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.