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Finding the Fourth Proportional to 639,712.60, 882,797.70 and 353,226.52

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Solution

The fourth proportional to 639,712.60, 882,797.70 and 353,226.52 is: 487,449.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,712.60 : 882,797.70 = 353,226.52 : x
  2. Step 2: Convert to fraction form
    639,712.60/882,797.70 = 353,226.52/x
  3. Step 3: Cross multiply
    639,712.60x = 882,797.70 × 353,226.52
  4. Step 4: Simplify right side
    639,712.60x = 311,827,559,435.00
  5. Step 5: Solve for x
    x = 311,827,559,435.00/639,712.60
  6. Step 6: Final answer
    x = 487,449.46

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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.