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Finding the Fourth Proportional to 1,331,723.07, 1,836,571.34 and 872,670.92

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Solution

The fourth proportional to 1,331,723.07, 1,836,571.34 and 872,670.92 is: 1,203,495.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331,723.07 : 1,836,571.34 = 872,670.92 : x
  2. Step 2: Convert to fraction form
    1,331,723.07/1,836,571.34 = 872,670.92/x
  3. Step 3: Cross multiply
    1,331,723.07x = 1,836,571.34 × 872,670.92
  4. Step 4: Simplify right side
    1,331,723.07x = 1,602,722,387,377.22
  5. Step 5: Solve for x
    x = 1,602,722,387,377.22/1,331,723.07
  6. Step 6: Final answer
    x = 1,203,495.25

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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.