Home / 398,901,021.65-597,875,488.17-185,658,455.30

Finding the Fourth Proportional to 398,901,021.65, 597,875,488.17 and 185,658,455.30

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Solution

The fourth proportional to 398,901,021.65, 597,875,488.17 and 185,658,455.30 is: 278,266,120.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,901,021.65 : 597,875,488.17 = 185,658,455.30 : x
  2. Step 2: Convert to fraction form
    398,901,021.65/597,875,488.17 = 185,658,455.30/x
  3. Step 3: Cross multiply
    398,901,021.65x = 597,875,488.17 × 185,658,455.30
  4. Step 4: Simplify right side
    398,901,021.65x = 111,000,639,591,690,016
  5. Step 5: Solve for x
    x = 111,000,639,591,690,016/398,901,021.65
  6. Step 6: Final answer
    x = 278,266,120.09

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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.