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Finding the Fourth Proportional to 999,564.56, 1,379,394.96 and 540,679.40

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Solution

The fourth proportional to 999,564.56, 1,379,394.96 and 540,679.40 is: 746,135.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,564.56 : 1,379,394.96 = 540,679.40 : x
  2. Step 2: Convert to fraction form
    999,564.56/1,379,394.96 = 540,679.40/x
  3. Step 3: Cross multiply
    999,564.56x = 1,379,394.96 × 540,679.40
  4. Step 4: Simplify right side
    999,564.56x = 745,810,439,335.82
  5. Step 5: Solve for x
    x = 745,810,439,335.82/999,564.56
  6. Step 6: Final answer
    x = 746,135.34

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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.