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Finding the Fourth Proportional to 680,998.25, 939,758.33 and 370,893.81

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Solution

The fourth proportional to 680,998.25, 939,758.33 and 370,893.81 is: 511,822.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,998.25 : 939,758.33 = 370,893.81 : x
  2. Step 2: Convert to fraction form
    680,998.25/939,758.33 = 370,893.81/x
  3. Step 3: Cross multiply
    680,998.25x = 939,758.33 × 370,893.81
  4. Step 4: Simplify right side
    680,998.25x = 348,550,545,638.47
  5. Step 5: Solve for x
    x = 348,550,545,638.47/680,998.25
  6. Step 6: Final answer
    x = 511,822.97

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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.