Home / 639,106.40-882,286.43-397,466.81

Finding the Fourth Proportional to 639,106.40, 882,286.43 and 397,466.81

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Solution

The fourth proportional to 639,106.40, 882,286.43 and 397,466.81 is: 548,702.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,106.40 : 882,286.43 = 397,466.81 : x
  2. Step 2: Convert to fraction form
    639,106.40/882,286.43 = 397,466.81/x
  3. Step 3: Cross multiply
    639,106.40x = 882,286.43 × 397,466.81
  4. Step 4: Simplify right side
    639,106.40x = 350,679,572,838.39
  5. Step 5: Solve for x
    x = 350,679,572,838.39/639,106.40
  6. Step 6: Final answer
    x = 548,702.96

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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.