Home / 636,650,879.36-878,569,214.31-358,191,738.56

Finding the Fourth Proportional to 636,650,879.36, 878,569,214.31 and 358,191,738.56

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Solution

The fourth proportional to 636,650,879.36, 878,569,214.31 and 358,191,738.56 is: 494,299,536.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,650,879.36 : 878,569,214.31 = 358,191,738.56 : x
  2. Step 2: Convert to fraction form
    636,650,879.36/878,569,214.31 = 358,191,738.56/x
  3. Step 3: Cross multiply
    636,650,879.36x = 878,569,214.31 × 358,191,738.56
  4. Step 4: Simplify right side
    636,650,879.36x = 314,696,234,318,992,128
  5. Step 5: Solve for x
    x = 314,696,234,318,992,128/636,650,879.36
  6. Step 6: Final answer
    x = 494,299,536.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.