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Finding the Fourth Proportional to 631,161.12, 870,996.48 and 344,680.32

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Solution

The fourth proportional to 631,161.12, 870,996.48 and 344,680.32 is: 475,655.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,161.12 : 870,996.48 = 344,680.32 : x
  2. Step 2: Convert to fraction form
    631,161.12/870,996.48 = 344,680.32/x
  3. Step 3: Cross multiply
    631,161.12x = 870,996.48 × 344,680.32
  4. Step 4: Simplify right side
    631,161.12x = 300,215,345,445.27
  5. Step 5: Solve for x
    x = 300,215,345,445.27/631,161.12
  6. Step 6: Final answer
    x = 475,655.64

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1.5x scale

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.