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Finding the Fourth Proportional to 631,077.97, 870,772.90 and 372,998.31

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Solution

The fourth proportional to 631,077.97, 870,772.90 and 372,998.31 is: 514,669.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,077.97 : 870,772.90 = 372,998.31 : x
  2. Step 2: Convert to fraction form
    631,077.97/870,772.90 = 372,998.31/x
  3. Step 3: Cross multiply
    631,077.97x = 870,772.90 × 372,998.31
  4. Step 4: Simplify right side
    631,077.97x = 324,796,820,093.80
  5. Step 5: Solve for x
    x = 324,796,820,093.80/631,077.97
  6. Step 6: Final answer
    x = 514,669.88

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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.