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Finding the Fourth Proportional to 648,132.70, 894,422.42 and 361,652.81

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Solution

The fourth proportional to 648,132.70, 894,422.42 and 361,652.81 is: 499,080.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,132.70 : 894,422.42 = 361,652.81 : x
  2. Step 2: Convert to fraction form
    648,132.70/894,422.42 = 361,652.81/x
  3. Step 3: Cross multiply
    648,132.70x = 894,422.42 × 361,652.81
  4. Step 4: Simplify right side
    648,132.70x = 323,470,377,952.02
  5. Step 5: Solve for x
    x = 323,470,377,952.02/648,132.70
  6. Step 6: Final answer
    x = 499,080.48

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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.