Home / 1,098,054.73-1,515,100.12-689,920.12

Finding the Fourth Proportional to 1,098,054.73, 1,515,100.12 and 689,920.12

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Solution

The fourth proportional to 1,098,054.73, 1,515,100.12 and 689,920.12 is: 951,954.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,054.73 : 1,515,100.12 = 689,920.12 : x
  2. Step 2: Convert to fraction form
    1,098,054.73/1,515,100.12 = 689,920.12/x
  3. Step 3: Cross multiply
    1,098,054.73x = 1,515,100.12 × 689,920.12
  4. Step 4: Simplify right side
    1,098,054.73x = 1,045,298,056,602.41
  5. Step 5: Solve for x
    x = 1,045,298,056,602.41/1,098,054.73
  6. Step 6: Final answer
    x = 951,954.42

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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.