Home / 999,631.82-1,378,057.12-712,653.68

Finding the Fourth Proportional to 999,631.82, 1,378,057.12 and 712,653.68

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Solution

The fourth proportional to 999,631.82, 1,378,057.12 and 712,653.68 is: 982,439.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,631.82 : 1,378,057.12 = 712,653.68 : x
  2. Step 2: Convert to fraction form
    999,631.82/1,378,057.12 = 712,653.68/x
  3. Step 3: Cross multiply
    999,631.82x = 1,378,057.12 × 712,653.68
  4. Step 4: Simplify right side
    999,631.82x = 982,077,475,738.82
  5. Step 5: Solve for x
    x = 982,077,475,738.82/999,631.82
  6. Step 6: Final answer
    x = 982,439.19

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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.