Home / 999,709.83-1,378,164.51-712,731.69

Finding the Fourth Proportional to 999,709.83, 1,378,164.51 and 712,731.69

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Solution

The fourth proportional to 999,709.83, 1,378,164.51 and 712,731.69 is: 982,546.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,709.83 : 1,378,164.51 = 712,731.69 : x
  2. Step 2: Convert to fraction form
    999,709.83/1,378,164.51 = 712,731.69/x
  3. Step 3: Cross multiply
    999,709.83x = 1,378,164.51 × 712,731.69
  4. Step 4: Simplify right side
    999,709.83x = 982,261,520,310.32
  5. Step 5: Solve for x
    x = 982,261,520,310.32/999,709.83
  6. Step 6: Final answer
    x = 982,546.63

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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.