Home / 639,390.40-882,295.92-352,892.08

Finding the Fourth Proportional to 639,390.40, 882,295.92 and 352,892.08

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Solution

The fourth proportional to 639,390.40, 882,295.92 and 352,892.08 is: 486,956.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,390.40 : 882,295.92 = 352,892.08 : x
  2. Step 2: Convert to fraction form
    639,390.40/882,295.92 = 352,892.08/x
  3. Step 3: Cross multiply
    639,390.40x = 882,295.92 × 352,892.08
  4. Step 4: Simplify right side
    639,390.40x = 311,355,242,384.31
  5. Step 5: Solve for x
    x = 311,355,242,384.31/639,390.40
  6. Step 6: Final answer
    x = 486,956.39

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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.