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Finding the Fourth Proportional to 631,021.68, 870,809.40 and 344,543.04

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Solution

The fourth proportional to 631,021.68, 870,809.40 and 344,543.04 is: 475,469.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,021.68 : 870,809.40 = 344,543.04 : x
  2. Step 2: Convert to fraction form
    631,021.68/870,809.40 = 344,543.04/x
  3. Step 3: Cross multiply
    631,021.68x = 870,809.40 × 344,543.04
  4. Step 4: Simplify right side
    631,021.68x = 300,031,317,936.58
  5. Step 5: Solve for x
    x = 300,031,317,936.58/631,021.68
  6. Step 6: Final answer
    x = 475,469.11

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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.