Home / 1,286,925,009.60-1,930,891,399.20-469,119,979.20

Finding the Fourth Proportional to 1,286,925,009.60, 1,930,891,399.20 and 469,119,979.20

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Solution

The fourth proportional to 1,286,925,009.60, 1,930,891,399.20 and 469,119,979.20 is: 703,863,648.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,925,009.60 : 1,930,891,399.20 = 469,119,979.20 : x
  2. Step 2: Convert to fraction form
    1,286,925,009.60/1,930,891,399.20 = 469,119,979.20/x
  3. Step 3: Cross multiply
    1,286,925,009.60x = 1,930,891,399.20 × 469,119,979.20
  4. Step 4: Simplify right side
    1,286,925,009.60x = 905,819,733,030,162,944
  5. Step 5: Solve for x
    x = 905,819,733,030,162,944/1,286,925,009.60
  6. Step 6: Final answer
    x = 703,863,648.83

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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.