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Finding the Fourth Proportional to 718,372, 1,077,558.41 and 219,736

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Solution

The fourth proportional to 718,372, 1,077,558.41 and 219,736 is: 329,604.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,372 : 1,077,558.41 = 219,736 : x
  2. Step 2: Convert to fraction form
    718,372/1,077,558.41 = 219,736/x
  3. Step 3: Cross multiply
    718,372x = 1,077,558.41 × 219,736
  4. Step 4: Simplify right side
    718,372x = 236,778,374,779.76
  5. Step 5: Solve for x
    x = 236,778,374,779.76/718,372
  6. Step 6: Final answer
    x = 329,604.13

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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.