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Finding the Fourth Proportional to 620,236.52, 855,926.40 and 348,304.64

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Solution

The fourth proportional to 620,236.52, 855,926.40 and 348,304.64 is: 480,660.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,236.52 : 855,926.40 = 348,304.64 : x
  2. Step 2: Convert to fraction form
    620,236.52/855,926.40 = 348,304.64/x
  3. Step 3: Cross multiply
    620,236.52x = 855,926.40 × 348,304.64
  4. Step 4: Simplify right side
    620,236.52x = 298,123,136,618.50
  5. Step 5: Solve for x
    x = 298,123,136,618.50/620,236.52
  6. Step 6: Final answer
    x = 480,660.40

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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.