Home / 1,188,631.79-1,640,306.49-644,767.82

Finding the Fourth Proportional to 1,188,631.79, 1,640,306.49 and 644,767.82

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Solution

The fourth proportional to 1,188,631.79, 1,640,306.49 and 644,767.82 is: 889,776.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,631.79 : 1,640,306.49 = 644,767.82 : x
  2. Step 2: Convert to fraction form
    1,188,631.79/1,640,306.49 = 644,767.82/x
  3. Step 3: Cross multiply
    1,188,631.79x = 1,640,306.49 × 644,767.82
  4. Step 4: Simplify right side
    1,188,631.79x = 1,057,616,839,689.15
  5. Step 5: Solve for x
    x = 1,057,616,839,689.15/1,188,631.79
  6. Step 6: Final answer
    x = 889,776.67

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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.