Home / 639,428.82-882,411.82-352,948.98

Finding the Fourth Proportional to 639,428.82, 882,411.82 and 352,948.98

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Solution

The fourth proportional to 639,428.82, 882,411.82 and 352,948.98 is: 487,069.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,428.82 : 882,411.82 = 352,948.98 : x
  2. Step 2: Convert to fraction form
    639,428.82/882,411.82 = 352,948.98/x
  3. Step 3: Cross multiply
    639,428.82x = 882,411.82 × 352,948.98
  4. Step 4: Simplify right side
    639,428.82x = 311,446,351,808.94
  5. Step 5: Solve for x
    x = 311,446,351,808.94/639,428.82
  6. Step 6: Final answer
    x = 487,069.62

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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.