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Finding the Fourth Proportional to 401,774.68, 599,112.29 and 398,168.56

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Solution

The fourth proportional to 401,774.68, 599,112.29 and 398,168.56 is: 593,734.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,774.68 : 599,112.29 = 398,168.56 : x
  2. Step 2: Convert to fraction form
    401,774.68/599,112.29 = 398,168.56/x
  3. Step 3: Cross multiply
    401,774.68x = 599,112.29 × 398,168.56
  4. Step 4: Simplify right side
    401,774.68x = 238,547,677,787.60
  5. Step 5: Solve for x
    x = 238,547,677,787.60/401,774.68
  6. Step 6: Final answer
    x = 593,734.97

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.