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Finding the Fourth Proportional to 500,999.73, 751,501.11 and 121,920.51

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Solution

The fourth proportional to 500,999.73, 751,501.11 and 121,920.51 is: 182,881.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,999.73 : 751,501.11 = 121,920.51 : x
  2. Step 2: Convert to fraction form
    500,999.73/751,501.11 = 121,920.51/x
  3. Step 3: Cross multiply
    500,999.73x = 751,501.11 × 121,920.51
  4. Step 4: Simplify right side
    500,999.73x = 91,623,398,596.77
  5. Step 5: Solve for x
    x = 91,623,398,596.77/500,999.73
  6. Step 6: Final answer
    x = 182,881.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.