Home / 981,186,286.40-1,471,779,431.04-398,784,080.96

Finding the Fourth Proportional to 981,186,286.40, 1,471,779,431.04 and 398,784,080.96

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Solution

The fourth proportional to 981,186,286.40, 1,471,779,431.04 and 398,784,080.96 is: 598,176,122.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,186,286.40 : 1,471,779,431.04 = 398,784,080.96 : x
  2. Step 2: Convert to fraction form
    981,186,286.40/1,471,779,431.04 = 398,784,080.96/x
  3. Step 3: Cross multiply
    981,186,286.40x = 1,471,779,431.04 × 398,784,080.96
  4. Step 4: Simplify right side
    981,186,286.40x = 586,922,207,783,118,080
  5. Step 5: Solve for x
    x = 586,922,207,783,118,080/981,186,286.40
  6. Step 6: Final answer
    x = 598,176,122.03

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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.