Home / 999,609.57-1,378,026.38-712,631.43

Finding the Fourth Proportional to 999,609.57, 1,378,026.38 and 712,631.43

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Solution

The fourth proportional to 999,609.57, 1,378,026.38 and 712,631.43 is: 982,408.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,609.57 : 1,378,026.38 = 712,631.43 : x
  2. Step 2: Convert to fraction form
    999,609.57/1,378,026.38 = 712,631.43/x
  3. Step 3: Cross multiply
    999,609.57x = 1,378,026.38 × 712,631.43
  4. Step 4: Simplify right side
    999,609.57x = 982,024,906,193.97
  5. Step 5: Solve for x
    x = 982,024,906,193.97/999,609.57
  6. Step 6: Final answer
    x = 982,408.47

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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.