Home / 1,128,786,330.11-1,693,196,512.75-391,879,635.29

Finding the Fourth Proportional to 1,128,786,330.11, 1,693,196,512.75 and 391,879,635.29

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Solution

The fourth proportional to 1,128,786,330.11, 1,693,196,512.75 and 391,879,635.29 is: 587,825,360.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,786,330.11 : 1,693,196,512.75 = 391,879,635.29 : x
  2. Step 2: Convert to fraction form
    1,128,786,330.11/1,693,196,512.75 = 391,879,635.29/x
  3. Step 3: Cross multiply
    1,128,786,330.11x = 1,693,196,512.75 × 391,879,635.29
  4. Step 4: Simplify right side
    1,128,786,330.11x = 663,529,231,889,162,752
  5. Step 5: Solve for x
    x = 663,529,231,889,162,752/1,128,786,330.11
  6. Step 6: Final answer
    x = 587,825,360.91

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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.