Home / 10,305,601.20-15,458,401.80-7,921,479.60

Finding the Fourth Proportional to 10,305,601.20, 15,458,401.80 and 7,921,479.60

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Solution

The fourth proportional to 10,305,601.20, 15,458,401.80 and 7,921,479.60 is: 11,882,219.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,305,601.20 : 15,458,401.80 = 7,921,479.60 : x
  2. Step 2: Convert to fraction form
    10,305,601.20/15,458,401.80 = 7,921,479.60/x
  3. Step 3: Cross multiply
    10,305,601.20x = 15,458,401.80 × 7,921,479.60
  4. Step 4: Simplify right side
    10,305,601.20x = 122,453,414,507,303.28
  5. Step 5: Solve for x
    x = 122,453,414,507,303.28/10,305,601.20
  6. Step 6: Final answer
    x = 11,882,219.40

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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.