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Finding the Fourth Proportional to 572,372.16, 789,974.40 and 330,663.84

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Solution

The fourth proportional to 572,372.16, 789,974.40 and 330,663.84 is: 456,374.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,372.16 : 789,974.40 = 330,663.84 : x
  2. Step 2: Convert to fraction form
    572,372.16/789,974.40 = 330,663.84/x
  3. Step 3: Cross multiply
    572,372.16x = 789,974.40 × 330,663.84
  4. Step 4: Simplify right side
    572,372.16x = 261,215,968,605.70
  5. Step 5: Solve for x
    x = 261,215,968,605.70/572,372.16
  6. Step 6: Final answer
    x = 456,374.34

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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.