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Finding the Fourth Proportional to 515,810.67, 711,821.30 and 322,330.73

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Solution

The fourth proportional to 515,810.67, 711,821.30 and 322,330.73 is: 444,818.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,810.67 : 711,821.30 = 322,330.73 : x
  2. Step 2: Convert to fraction form
    515,810.67/711,821.30 = 322,330.73/x
  3. Step 3: Cross multiply
    515,810.67x = 711,821.30 × 322,330.73
  4. Step 4: Simplify right side
    515,810.67x = 229,441,875,699.44
  5. Step 5: Solve for x
    x = 229,441,875,699.44/515,810.67
  6. Step 6: Final answer
    x = 444,818.01

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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.