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Finding the Fourth Proportional to 631,043.02, 870,874.65 and 344,589.70

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Solution

The fourth proportional to 631,043.02, 870,874.65 and 344,589.70 is: 475,553.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,043.02 : 870,874.65 = 344,589.70 : x
  2. Step 2: Convert to fraction form
    631,043.02/870,874.65 = 344,589.70/x
  3. Step 3: Cross multiply
    631,043.02x = 870,874.65 × 344,589.70
  4. Step 4: Simplify right side
    631,043.02x = 300,094,434,381.11
  5. Step 5: Solve for x
    x = 300,094,434,381.11/631,043.02
  6. Step 6: Final answer
    x = 475,553.05

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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.