Home / 639,459.12-882,460.86-352,979.34

Finding the Fourth Proportional to 639,459.12, 882,460.86 and 352,979.34

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Solution

The fourth proportional to 639,459.12, 882,460.86 and 352,979.34 is: 487,115.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,459.12 : 882,460.86 = 352,979.34 : x
  2. Step 2: Convert to fraction form
    639,459.12/882,460.86 = 352,979.34/x
  3. Step 3: Cross multiply
    639,459.12x = 882,460.86 × 352,979.34
  4. Step 4: Simplify right side
    639,459.12x = 311,490,451,938.63
  5. Step 5: Solve for x
    x = 311,490,451,938.63/639,459.12
  6. Step 6: Final answer
    x = 487,115.50

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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.