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Finding the Fourth Proportional to 611,779.92, 844,356.60 and 353,665.32

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Solution

The fourth proportional to 611,779.92, 844,356.60 and 353,665.32 is: 488,116.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,779.92 : 844,356.60 = 353,665.32 : x
  2. Step 2: Convert to fraction form
    611,779.92/844,356.60 = 353,665.32/x
  3. Step 3: Cross multiply
    611,779.92x = 844,356.60 × 353,665.32
  4. Step 4: Simplify right side
    611,779.92x = 298,619,647,133.11
  5. Step 5: Solve for x
    x = 298,619,647,133.11/611,779.92
  6. Step 6: Final answer
    x = 488,116.13

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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.