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Finding the Fourth Proportional to 689,670.73, 951,602.97 and 403,135.39

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Solution

The fourth proportional to 689,670.73, 951,602.97 and 403,135.39 is: 556,243.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,670.73 : 951,602.97 = 403,135.39 : x
  2. Step 2: Convert to fraction form
    689,670.73/951,602.97 = 403,135.39/x
  3. Step 3: Cross multiply
    689,670.73x = 951,602.97 × 403,135.39
  4. Step 4: Simplify right side
    689,670.73x = 383,624,834,436.11
  5. Step 5: Solve for x
    x = 383,624,834,436.11/689,670.73
  6. Step 6: Final answer
    x = 556,243.46

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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.