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Finding the Fourth Proportional to 646,908.59, 969,119.21 and 361,734.21

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Solution

The fourth proportional to 646,908.59, 969,119.21 and 361,734.21 is: 541,905.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,908.59 : 969,119.21 = 361,734.21 : x
  2. Step 2: Convert to fraction form
    646,908.59/969,119.21 = 361,734.21/x
  3. Step 3: Cross multiply
    646,908.59x = 969,119.21 × 361,734.21
  4. Step 4: Simplify right side
    646,908.59x = 350,563,572,729.51
  5. Step 5: Solve for x
    x = 350,563,572,729.51/646,908.59
  6. Step 6: Final answer
    x = 541,905.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.