Home / 981,077,904.96-1,471,024,115.76-390,958,929.52

Finding the Fourth Proportional to 981,077,904.96, 1,471,024,115.76 and 390,958,929.52

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Solution

The fourth proportional to 981,077,904.96, 1,471,024,115.76 and 390,958,929.52 is: 586,202,187.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,077,904.96 : 1,471,024,115.76 = 390,958,929.52 : x
  2. Step 2: Convert to fraction form
    981,077,904.96/1,471,024,115.76 = 390,958,929.52/x
  3. Step 3: Cross multiply
    981,077,904.96x = 1,471,024,115.76 × 390,958,929.52
  4. Step 4: Simplify right side
    981,077,904.96x = 575,110,013,595,634,112
  5. Step 5: Solve for x
    x = 575,110,013,595,634,112/981,077,904.96
  6. Step 6: Final answer
    x = 586,202,187.09

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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.