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Finding the Fourth Proportional to 639,396.36, 882,304.20 and 352,898.10

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Solution

The fourth proportional to 639,396.36, 882,304.20 and 352,898.10 is: 486,964.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,396.36 : 882,304.20 = 352,898.10 : x
  2. Step 2: Convert to fraction form
    639,396.36/882,304.20 = 352,898.10/x
  3. Step 3: Cross multiply
    639,396.36x = 882,304.20 × 352,898.10
  4. Step 4: Simplify right side
    639,396.36x = 311,363,475,802.02
  5. Step 5: Solve for x
    x = 311,363,475,802.02/639,396.36
  6. Step 6: Final answer
    x = 486,964.73

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1.5x scale

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.